university anatomy short notes answer writing diagrams tips medical school

Which section should I prepare first as concise university-style short notes with simple labelled diagrams, then compile into a PDF?

anatomy education AND systematic review

Gray's Anatomy anatomy terminology portal vein uterine supports official reference

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mkdir -p "/tmp/workspace/anatomy-revision-pdf/src" "/tmp/workspace/anatomy-revision-pdf/output" "/tmp/workspace/anatomy-revision-pdf/assets" && printf '%s\n' 'workspace project directories ready'

cat > "/tmp/workspace/anatomy-revision-pdf/src/build_pdf.py" <<'PY' from reportlab.lib.pagesizes import A4 from reportlab.platypus import SimpleDocTemplate, Paragraph, Spacer, PageBreak, Table, TableStyle, KeepTogether from reportlab.lib.styles import getSampleStyleSheet, ParagraphStyle from reportlab.lib import colors from reportlab.lib.units import cm from reportlab.pdfbase.ttfonts import TTFont from reportlab.pdfbase import pdfmetrics from reportlab.graphics.shapes import Drawing, Rect, Line, String, Circle, Polygon from reportlab.lib.enums import TA_CENTER from reportlab.pdfgen import canvas import os OUT='/tmp/workspace/anatomy-revision-pdf/output/Anatomy_57_Topic_Revision.pdf' styles=getSampleStyleSheet() styles.add(ParagraphStyle(name='Cover',parent=styles['Title'],fontSize=25,leading=30,textColor=colors.HexColor('#12324a'),alignment=TA_CENTER,spaceAfter=18)) styles.add(ParagraphStyle(name='Sub',parent=styles['Normal'],fontSize=11,leading=15,alignment=TA_CENTER,textColor=colors.HexColor('#36566d'))) styles.add(ParagraphStyle(name='Section',parent=styles['Heading1'],fontSize=17,leading=21,textColor=colors.white,backColor=colors.HexColor('#1f5a78'),spaceBefore=10,spaceAfter=10,borderPadding=7)) styles.add(ParagraphStyle(name='Topic',parent=styles['Heading2'],fontSize=13,leading=16,textColor=colors.HexColor('#12324a'),spaceBefore=10,spaceAfter=5,keepWithNext=True)) styles.add(ParagraphStyle(name='Body2',parent=styles['BodyText'],fontSize=8.6,leading=11.2,spaceAfter=4)) styles.add(ParagraphStyle(name='Small',parent=styles['BodyText'],fontSize=7.5,leading=9.5,textColor=colors.HexColor('#333333'))) styles.add(ParagraphStyle(name='Tip',parent=styles['BodyText'],fontSize=8.1,leading=10.2,textColor=colors.HexColor('#7a3412'),leftIndent=7,rightIndent=7,backColor=colors.HexColor('#fff7e6'),borderPadding=5,spaceAfter=6)) # topic: title, core answer, exam clincher T=[] def add(n,title,core,tip='') : T.append((n,title,core,tip)) add(1,'Femoral canal','Medial compartment of femoral sheath, about 1.25 cm long, extending from femoral ring to lower end of sheath. <b>Boundaries of femoral ring:</b> anterior inguinal ligament; posterior pectineal ligament/fascia over pectineus; medial lacunar ligament; lateral femoral vein. <b>Contents:</b> loose areolar tissue, fat, lymphatics and deep inguinal node (Cloquet/Rosenmuller). <b>Function:</b> permits expansion of femoral vein.','Femoral hernia enters ring, descends in canal and may emerge through saphenous opening. It is common in women; strangulation is frequent. Never divide lacunar ligament blindly: aberrant obturator artery may lie nearby.') add(2,'Portal vein','A valveless vein carrying nutrient-rich blood from gastrointestinal tract, spleen, pancreas and gallbladder to liver. Formed behind neck of pancreas by union of superior mesenteric and splenic veins, at L2. Ends at porta hepatis by right and left branches. It normally supplies about 70-75% of hepatic blood flow.','Portal hypertension produces portosystemic collateral enlargement: lower oesophagus, anal canal, para-umbilical region and retroperitoneal sites.') add(3,'Supports of uterus','<b>Primary/mechanical:</b> pelvic diaphragm (levator ani), perineal body and urogenital diaphragm support pelvic viscera. <b>True fibromuscular supports:</b> transverse cervical (cardinal/Mackenrodt), uterosacral and pubocervical ligaments. <b>Secondary:</b> round ligaments maintain anteversion; broad ligaments have little supporting value; upper vagina contributes to fixation. Normal position: anteverted and anteflexed.','Weakness after childbirth or raised intra-abdominal pressure may cause uterine prolapse. Cardinal ligament is related to uterine artery and ureter.') add(4,'Descent of testis and applied anatomy','Testis develops on posterior abdominal wall near T10, then reaches deep inguinal ring about 7th month, traverses inguinal canal in 7th month and reaches scrotum by 8th month. Gubernaculum guides descent; processus vaginalis precedes testis and normally its proximal part obliterates. Testicular vessels remain long, explaining high origin of lymphatic drainage.','Cryptorchid testis has infertility and malignancy risk. Persistent processus vaginalis causes congenital indirect inguinal hernia or hydrocele.') add(5,'Hepatic segments (Couinaud)','Eight functionally independent segments, each with portal triad inflow and biliary drainage. Hepatic veins lie in intersegmental planes. Segment I is caudate; II-III left lateral; IV left medial (IVa superior, IVb inferior); V-VIII right liver. Middle hepatic vein approximates Cantlie line separating right and left functional lobes.','Segmental anatomy permits limited hepatic resection while preserving vascular inflow and outflow.') add(6,'Blood supply of stomach','<b>Arteries:</b> left gastric (coeliac trunk) and right gastric (usually proper hepatic) along lesser curvature; left gastro-omental (splenic) and right gastro-omental (gastroduodenal) along greater curvature; short gastric and posterior gastric from splenic artery to fundus. <b>Veins:</b> correspond and drain to portal system: left/right gastric directly, short and left gastro-omental to splenic, right gastro-omental to SMV.','Rich anastomoses permit gastric mobilization, but ligation must respect regional supply in gastrectomy.') add(7,'Movements of knee joint','Modified hinge synovial joint. <b>Flexion:</b> hamstrings, gracilis, sartorius, gastrocnemius, popliteus; small rolling and gliding. <b>Extension:</b> quadriceps femoris. In flexion, rotation occurs: medial rotation by semitendinosus, semimembranosus, popliteus, sartorius and gracilis; lateral rotation by biceps femoris. Range: flexion about 135 degrees; extension to 0 degrees, slight hyperextension may occur.','Menisci improve congruity and absorb shock; locking makes standing efficient.') add(8,"Meckel's diverticulum",'True congenital diverticulum on antimesenteric border of ileum, from persistent vitellointestinal duct. Classic rule of 2s: about 2%, 2 feet from ileocaecal junction, 2 inches long, often before age 2, may contain 2 ectopic tissues (gastric/pancreatic). Has all bowel wall layers and blood supply from persistent vitelline artery branch.','May ulcerate and bleed due to ectopic gastric mucosa, mimic appendicitis, or cause obstruction/intussusception.') add(9,'Perineal body','Central fibromuscular mass between anal canal and urogenital structures: between vagina and anus in female, bulb of penis and anus in male. Attached muscles include bulbospongiosus, external anal sphincter, superficial and deep transverse perineal muscles, and fibres of levator ani. It anchors pelvic floor.','Tear during childbirth weakens pelvic support and predisposes to prolapse; episiotomy aims to avoid uncontrolled central tear.') add(10,'Adductor canal','Intermuscular passage in middle third of thigh, from apex of femoral triangle to adductor hiatus. <b>Walls:</b> anterolateral vastus medialis; posteromedial adductor longus and magnus; roof sartorius with subsartorial fascia. <b>Contents:</b> femoral artery, femoral vein, saphenous nerve, nerve to vastus medialis, descending genicular vessels.','Femoral vessels become popliteal vessels through adductor hiatus; saphenous nerve leaves canal before the hiatus.') add(11,'Thoracolumbar fascia','Strong deep fascial complex in lumbar region. Three layers: posterior layer attached to spinous processes; middle layer attached to transverse processes; anterior layer over quadratus lumborum. Posterior and middle layers enclose erector spinae; middle and anterior layers enclose quadratus lumborum. Provides origin to latissimus dorsi, internal oblique and transversus abdominis.','Transmits forces between trunk and limbs and contributes to lumbar stability; strain may contribute to low-back pain.') add(12,'Ligaments of hip joint','<b>Capsular:</b> attached proximally to acetabular rim/transverse ligament and distally to intertrochanteric line anteriorly and neck posteriorly. <b>Iliofemoral:</b> Y-shaped, strongest, checks hyperextension. <b>Pubofemoral:</b> checks excessive abduction/extension. <b>Ischiofemoral:</b> posterior, checks extension and medial rotation. <b>Ligament of head of femur:</b> carries acetabular branch of obturator artery in children. Transverse acetabular ligament bridges notch.','Capsule is weak inferomedially: a potential route for dislocation. Intracapsular neck fractures can endanger retinacular vessels.') add(13,'Development of uterus','Paired paramesonephric (Mullerian) ducts form uterine tubes cranially; their caudal fused parts form uterovaginal primordium, giving uterus and upper vagina. Fusion occurs in midline; intervening septum is resorbed to create uterine cavity. Endometrium arises from fused duct lining; myometrium and perimetrium from surrounding mesenchyme.','Failure of fusion: bicornuate/didelphys uterus. Failure of septal resorption: septate uterus. These may cause infertility or recurrent loss.') add(14,'Development of pancreas and anomalies','Dorsal and ventral endodermal pancreatic buds arise from caudal foregut. Ventral bud rotates posteriorly with bile duct and fuses with dorsal bud. Ventral bud forms uncinate process and inferior head; dorsal bud forms rest of head, body and tail. Main duct is ventral duct plus distal dorsal duct; accessory duct may persist.','Pancreas divisum: failed duct fusion. Annular pancreas: bifid ventral bud surrounds duodenum, causing duodenal obstruction.') add(15,'Relations of right kidney','Retroperitoneal, T12-L3, lower than left. <b>Anterior:</b> right suprarenal gland, liver, second part of duodenum medially, hepatic flexure and small intestine inferiorly. <b>Posterior:</b> diaphragm, 12th rib, psoas major, quadratus lumborum, transversus abdominis; subcostal vessels/nerve, iliohypogastric and ilioinguinal nerves. Hilum anterior-to-posterior: vein, artery, pelvis.','Right renal surgery requires awareness of pleura above and duodenum/liver anteriorly.') add(16,'Lymphatic drainage of stomach','Lymph follows arteries to nodes along curvatures: left/right gastric nodes, left/right gastro-omental nodes, pancreaticosplenic nodes, pyloric and hepatic nodes. Efferents reach coeliac nodes, then intestinal trunk and cisterna chyli. Gastric cancer can spread to left supraclavicular (Virchow) node via thoracic duct.','Know regional drainage for lymphadenectomy: proximal stomach mainly left gastric/pancreaticosplenic; distal stomach pyloric/hepatic groups.') add(17,'Microanatomy of prostate','Compound tubuloalveolar gland in fibromuscular stroma. Numerous branching glands are lined by simple to pseudostratified columnar epithelium, with basal cells; lumina often contain eosinophilic corpora amylacea. Glands are embedded in smooth muscle and fibroelastic tissue, whose contraction expels secretion. Zones: peripheral, central and transition.','Benign prostatic hyperplasia commonly affects transition zone; carcinoma usually peripheral zone, detectable by digital rectal examination.') add(18,'Structures under cover of gluteus maximus','From superficial to deep after reflecting muscle: greater trochanter with trochanteric bursa; ischial tuberosity with ischial bursa; gluteus medius, piriformis, obturator internus with gemelli, quadratus femoris; upper hamstrings. Nerves/vessels: sciatic nerve, posterior femoral cutaneous, inferior gluteal nerve/vessels, pudendal nerve/internal pudendal vessels, nerves to obturator internus and quadratus femoris.','Safe intramuscular injection is superolateral quadrant or ventrogluteal site, avoiding sciatic nerve.') add(19,'Arches of foot: maintenance and functions','Arches: medial and lateral longitudinal, transverse. <b>Static supports:</b> bony shape, plantar aponeurosis, spring ligament (plantar calcaneonavicular), long and short plantar ligaments. <b>Dynamic supports:</b> tibialis posterior/anterior, fibularis longus, flexor hallucis longus, flexor digitorum longus and intrinsic muscles. <b>Functions:</b> distribute weight, absorb shock, adapt to uneven ground, act as spring/lever in gait and protect plantar vessels/nerves.','Medial arch failure produces pes planus; posterior tibial tendon dysfunction is a common acquired cause.') add(20,'Lumbar plexus: root value, formation and branches','Formed in psoas major by anterior rami L1-L4, often with T12 contribution; L4 also joins L5 to form lumbosacral trunk. Branches: iliohypogastric (L1), ilioinguinal (L1), genitofemoral (L1-L2), lateral cutaneous nerve of thigh (L2-L3), femoral (L2-L4 posterior divisions), obturator (L2-L4 anterior divisions), accessory obturator (L3-L4 occasional).','Femoral nerve injury weakens hip flexion/knee extension; obturator injury weakens adduction. Meralgia paraesthetica affects lateral cutaneous nerve of thigh.') add(21,'Portal vein: formation, course, relations and tributaries','<b>Formation:</b> SMV + splenic vein behind neck of pancreas. <b>Course:</b> ascends posterior to first part of duodenum, then in right free edge of lesser omentum (hepatoduodenal ligament), posterior to common bile duct and proper hepatic artery; divides at porta hepatis. <b>Tributaries:</b> left/right gastric, superior pancreaticoduodenal, cystic and paraumbilical veins; SMV and splenic at formation.','In Pringle manoeuvre, hepatoduodenal ligament is compressed to control hepatic inflow. Portal vein is posterior in portal triad.') add(22,'Inguinal canal: boundaries and contents','About 4 cm oblique passage above medial half of inguinal ligament, from deep to superficial ring. <b>Anterior wall:</b> external oblique aponeurosis, reinforced laterally by internal oblique. <b>Posterior:</b> transversalis fascia, reinforced medially by conjoint tendon. <b>Roof:</b> arching internal oblique and transversus fibres. <b>Floor:</b> inguinal ligament, lacunar ligament medially. <b>Contents:</b> spermatic cord plus ilioinguinal nerve in male; round ligament plus ilioinguinal nerve in female.','Indirect hernia enters deep ring lateral to inferior epigastric vessels; direct hernia protrudes through posterior wall medial to them.') add(23,'Microanatomy of stomach','Mucosa has simple columnar surface mucous cells, gastric pits and glands; no villi. Cardiac glands chiefly mucous. Fundic/body glands contain mucous neck cells, parietal cells (HCl, intrinsic factor), chief cells (pepsinogen), enteroendocrine cells and stem cells. Pyloric glands are branched/coiled, rich in mucous cells and G cells. Muscularis externa has outer longitudinal, middle circular and inner oblique layers.','Loss of parietal cells causes intrinsic factor deficiency and pernicious anaemia. H. pylori commonly colonizes antrum.') add(24,'Development of kidney','Three sequential nephric systems: pronephros rudimentary, mesonephros transient, metanephros permanent from week 5. Ureteric bud from mesonephric duct forms ureter, pelvis, calyces and collecting ducts. Metanephric blastema forms nephrons from Bowman capsule to distal convoluted tubule. Kidneys ascend from pelvis to lumbar region and rotate medially; arterial supply changes during ascent.','Failure of ascent causes pelvic kidney; fusion of lower poles causes horseshoe kidney, usually trapped below inferior mesenteric artery.') add(25,'Muscles of pelvic diaphragm','Pelvic diaphragm comprises levator ani and coccygeus. <b>Levator ani:</b> puborectalis, pubococcygeus and iliococcygeus; origin from pubis, tendinous arch of obturator fascia and ischial spine; insertion into perineal body, anococcygeal body, coccyx and walls of prostate/vagina/anal canal. <b>Coccygeus:</b> ischial spine to sacrum/coccyx. Nerve supply mainly S3-S4 with pudendal contributions.','Supports viscera, resists raised intra-abdominal pressure and puborectalis maintains anorectal angle for continence.') add(26,'Histology of duodenum','Mucosa has villi, crypts of Lieberkuhn, enterocytes with brush border, goblet cells, Paneth and enteroendocrine cells. Characteristic <b>Brunner glands</b> are in submucosa and secrete alkaline mucus to neutralize gastric acid. Muscularis externa has inner circular and outer longitudinal layers; serosa covers first part only, remainder mainly adventitia.','Differentiate from jejunum by submucosal Brunner glands. Coeliac disease primarily damages villi of proximal small intestine.') add(27,'Foregut derivatives','From pharynx to major duodenal papilla: pharynx, lower respiratory tract, oesophagus, stomach, proximal duodenum, liver, gallbladder and biliary apparatus, pancreas. Spleen is associated with foregut but develops from mesenchyme, not endoderm. Arterial supply is coeliac trunk.','Foregut rotation explains position of vagal trunks, omental bursa and pancreas.') add(28,'Lesser sac (omental bursa)','Peritoneal recess behind stomach and lesser omentum, communicating with greater sac through epiploic foramen. <b>Boundaries:</b> anterior stomach, lesser omentum and gastrocolic ligament; posterior pancreas, left kidney/suprarenal, transverse mesocolon; superior caudate lobe of liver/diaphragm; inferior transverse colon and mesocolon. Recesses: superior, inferior and splenic.','Allows stomach movement. Fluid may collect in lesser sac; posterior gastric ulcer can involve pancreas.') add(29,'Locking and unlocking of knee','In terminal extension during weight bearing, femur medially rotates on fixed tibia (or tibia laterally rotates on femur), tightening cruciate/collateral ligaments and locking knee. It makes knee stable with little muscular effort. <b>Unlocking:</b> popliteus laterally rotates femur on fixed tibia, or medially rotates tibia in non-weight bearing, initiating flexion.','Popliteus is called the key to unlocking the knee.') add(30,'Broad ligament of uterus','Double layer of peritoneum from sides of uterus to lateral pelvic walls. Parts: mesometrium (largest inferior part), mesosalpinx (around uterine tube) and mesovarium (short fold attaching ovary). Contents include uterine tube, round ligament, ovarian ligament, uterine and ovarian vessels, nerves, lymphatics and loose connective tissue. Ureter passes beneath uterine artery near base.','It is a mesentery, not an effective primary uterine support. “Water under the bridge”: ureter under uterine artery.') add(31,'Vermiform appendix','Blind diverticulum of caecum, usually 6-9 cm, with base at convergence of three taeniae coli, 2 cm below ileocaecal junction. Positions: retrocaecal most common, pelvic, subcaecal, pre-ileal and post-ileal. Mesoappendix contains appendicular artery, end artery from ileocolic branch. Rich lymphoid follicles.','Pain starts periumbilical (T10 visceral) then localizes at McBurney point when parietal peritoneum is involved. End artery predisposes to gangrene.') add(32,'Epiploic foramen','Opening between greater and lesser sacs, behind free right edge of lesser omentum. <b>Anterior:</b> hepatoduodenal ligament with bile duct, proper hepatic artery and portal vein. <b>Posterior:</b> IVC. <b>Superior:</b> caudate lobe of liver. <b>Inferior:</b> first part of duodenum.','Site for internal hernia. Compression of anterior boundary (Pringle manoeuvre) temporarily controls bleeding from hepatic artery/portal vein.') add(33,'Histology of pancreas','Lobulated mixed gland with serous acini and pale islets of Langerhans. Acini have pyramidal cells with basal basophilia and apical zymogen granules; centroacinar cells initiate intercalated ducts. Duct system: intercalated, intralobular, interlobular; no striated ducts. Islets contain beta (insulin), alpha (glucagon), delta (somatostatin) and PP cells.','No myoepithelial cells or striated ducts distinguishes it from salivary glands. Chronic pancreatitis damages exocrine acini.') add(34,'Midgut derivatives','Distal duodenum from below major papilla, jejunum, ileum, caecum, appendix, ascending colon and proximal two-thirds of transverse colon. Supplied by superior mesenteric artery. Midgut loop undergoes physiological herniation, 90 degree counterclockwise rotation while herniated and further 180 degrees on return.','Failure of return gives omphalocele; incomplete rotation causes malrotation/volvulus. Vitelline duct remnants cause Meckel diverticulum.') add(35,'Anal canal','About 4 cm from anorectal junction to anus. Upper two-thirds derived from endoderm, lower one-third from ectoderm, separated by pectinate line. <b>Above:</b> columnar epithelium, superior rectal vessels, internal iliac lymph nodes, visceral innervation, painless. <b>Below:</b> stratified squamous epithelium, inferior rectal vessels, superficial inguinal nodes, somatic pudendal innervation, painful. Internal sphincter is smooth muscle; external sphincter skeletal muscle.','Internal haemorrhoids are usually painless; external haemorrhoids are painful. Pectinate line is an essential viva point.') add(36,'Inversion and eversion of foot','Inversion combines adduction, supination and medial rotation at subtalar/transverse tarsal joints. Main muscles: tibialis anterior and tibialis posterior, assisted by long toe flexors. Eversion combines abduction, pronation and lateral rotation. Main muscles: fibularis longus and brevis, assisted by fibularis tertius.','Inversion injuries commonly sprain lateral ankle ligaments, especially anterior talofibular ligament.') add(37,'Coeliac trunk','Short anterior branch of abdominal aorta at T12, just below aortic hiatus. It divides into left gastric, splenic and common hepatic arteries. Left gastric supplies lower oesophagus and lesser curvature. Splenic runs tortuously to spleen, supplying pancreas, fundus and greater curvature. Common hepatic gives gastroduodenal and proper hepatic branches.','Supplies foregut derivatives. Compression by median arcuate ligament may produce coeliac artery compression syndrome.') add(38,'Rectus sheath','Aponeurotic envelope of rectus abdominis and pyramidalis. Above arcuate line: anterior wall is external oblique + anterior lamina internal oblique; posterior wall is posterior lamina internal oblique + transversus abdominis. Below arcuate line: all three aponeuroses pass anteriorly; posteriorly only transversalis fascia. Contents: rectus, pyramidalis, superior/inferior epigastric vessels and terminal thoracoabdominal nerves.','Inferior epigastric vessels enter sheath at arcuate line. Posterior wall deficiency below it permits spread of rectus sheath haematoma.') add(39,'Popliteal fossa','Diamond-shaped space behind knee. <b>Boundaries:</b> superolateral biceps femoris; superomedial semimembranosus/semitendinosus; inferolateral lateral gastrocnemius/plantaris; inferomedial medial gastrocnemius. Roof: skin, superficial fascia, deep fascia. Floor: femur, capsule/oblique popliteal ligament, popliteus. Contents superficial-to-deep: tibial nerve, popliteal vein, popliteal artery; also common fibular nerve, nodes and small saphenous termination.','Popliteal artery is deepest and vulnerable in knee dislocation; check distal pulses.') add(40,'Microanatomy of liver','Classical lobule is hexagonal with central vein and portal triads at corners. Hepatocyte plates radiate to central vein; sinusoids carry mixed portal/arterial blood toward central vein. Kupffer cells line sinusoids; space of Disse lies between sinusoidal endothelium and hepatocytes, containing stellate cells. Bile flows opposite to blood through canaliculi toward portal triads. Acinus zones: 1 periportal, 2 intermediate, 3 centrilobular.','Zone 3 is most vulnerable to hypoxia and many toxins; zone 1 first receives blood and is exposed to blood-borne agents.') add(41,'Development of urinary system','Urinary system derives mainly from intermediate mesoderm. Nephrogenic cord produces pronephros, mesonephros and metanephros. Metanephric kidney forms via reciprocal induction of ureteric bud and metanephric mesenchyme. Urinary bladder except trigone develops from vesical part of urogenital sinus; trigone forms by incorporation of mesonephric ducts. Urethra derives from urogenital sinus, with sex-specific modifications.','Urachus connects fetal bladder to allantois and becomes median umbilical ligament; persistence can cause urachal fistula/cyst.') add(42,'Development of interatrial septum','Septum primum grows toward endocardial cushions, leaving ostium primum. Before it closes, perforations coalesce in upper primum as ostium secundum. Septum secundum develops to right, leaving foramen ovale. Septum primum acts as valve. At birth raised left atrial pressure closes valve functionally, then fuses anatomically in most people.','Patent foramen ovale permits possible paradoxical embolus. Ostium secundum ASD is commonest atrial septal defect.') add(43,'Hip joint','Multiaxial ball-and-socket synovial joint between head of femur and lunate surface of acetabulum, deepened by acetabular labrum. Capsule encloses neck anteriorly to intertrochanteric line and posteriorly proximal to crest. Movements: flexion/extension, abduction/adduction, medial/lateral rotation, circumduction. Blood supply chiefly retinacular branches of medial circumflex femoral artery. Nerve supply: femoral, obturator, superior gluteal and nerve to quadratus femoris.','Posterior dislocation may injure sciatic nerve. Intracapsular fracture risks avascular necrosis of femoral head.') add(44,'Superficial perineal pouch','Potential space between perineal membrane (superior) and membranous layer of superficial fascia/Colles fascia (inferior), closed laterally by ischiopubic rami. <b>Male contents:</b> root of penis, bulb and crura, bulbospongiosus, ischiocavernosus, superficial transverse perineal muscles, proximal spongy urethra, branches of internal pudendal vessels/nerves. <b>Female:</b> bulbs of vestibule, crura/clitoris and analogous muscles, greater vestibular glands.','Rupture of spongy urethra can spread urine into superficial perineal pouch, scrotum, penis and lower anterior abdominal wall, but not thigh.') add(45,'Major diaphragmatic openings','<b>T8 caval opening:</b> IVC, terminal right phrenic nerve, hepatic lymphatics; in central tendon. <b>T10 oesophageal hiatus:</b> oesophagus, anterior/posterior vagal trunks, oesophageal vessels and lymphatics; in right crus. <b>T12 aortic hiatus:</b> aorta, thoracic duct, azygos/hemiazygos veins; behind median arcuate ligament. Mnemonic: I 8 10 Eggs At 12.','Hiatus hernia commonly occurs through oesophageal hiatus. Caval opening widens during inspiration, aiding venous return.') add(46,'Ischioanal (ischiorectal) fossa','Wedge-shaped fat-filled space each side of anal canal, base at perineal skin and apex at junction of obturator fascia with inferior fascia of pelvic diaphragm. <b>Lateral:</b> obturator internus/fascia; <b>medial:</b> external anal sphincter and levator ani; <b>posterior:</b> sacrotuberous ligament/gluteus maximus; <b>anterior:</b> perineal membrane. Pudendal canal in lateral wall contains pudendal nerve and internal pudendal vessels.','Fat permits anal canal expansion; infection may form ischioanal abscess and spread through deep postanal space to opposite side.') add(47,'Hamstring muscles','True hamstrings arise from ischial tuberosity, cross hip and knee, insert below knee and are supplied by tibial division of sciatic nerve: semitendinosus, semimembranosus, long head biceps femoris and hamstring part of adductor magnus (crosses hip only). Short head biceps is not a true hamstring. Actions: extend hip, flex knee; semis medially rotate flexed leg, biceps laterally rotates it.','Hamstring strain commonly involves long head of biceps femoris during sprinting. Tibial nerve lesions weaken knee flexion.') add(48,'Microanatomy of suprarenal gland','Capsule surrounds cortex and medulla. Cortex: <b>zona glomerulosa</b> (arched clusters, mineralocorticoids), <b>zona fasciculata</b> (straight cords of pale spongiocytes, glucocorticoids), <b>zona reticularis</b> (network, androgens). Medulla contains chromaffin cells in cords around sinusoids, secreting catecholamines, modified sympathetic postganglionic neurons. Blood flows cortex to medulla, exposing medulla to cortical steroids.','Mnemonic GFR: salt, sugar, sex. Pheochromocytoma arises from chromaffin cells.') add(49,'Development of thoraco-abdominal diaphragm','Diaphragm develops from four components: septum transversum (central tendon), pleuroperitoneal membranes (posterolateral parts), dorsal mesentery of oesophagus (crura) and muscular ingrowth from lateral body walls (peripheral muscle). It descends from cervical region, retaining phrenic nerve supply C3-C5. Pleuroperitoneal canals close by week 7.','Failure of pleuroperitoneal membrane closure causes posterolateral congenital diaphragmatic hernia, often left-sided, with pulmonary hypoplasia.') add(50,'Root of mesentery','Oblique attachment of mesentery of jejunum and ileum, about 15 cm long, from duodenojejunal flexure left of L2 to ileocaecal junction/right sacroiliac region. It crosses third part of duodenum, aorta, IVC, right ureter, right psoas major and gonadal vessels. Contains SMA/SMV branches, lymphatics, nodes, autonomic nerves and fat.','Its oblique root allows extensive mobility of small intestine. Volvulus twists mesentery and can compromise vessels.') add(51,'Gastrulation','Week 3 process forming trilaminar embryonic disc. Primitive streak appears in epiblast; epiblast cells ingress: first replace hypoblast as definitive endoderm, next form intraembryonic mesoderm, remaining epiblast becomes ectoderm. Notochordal process induces neural plate and establishes axial patterning. Primitive node organizes cranial-caudal and left-right axes.','Abnormal primitive streak regression can cause sacrococcygeal teratoma. Disordered migration can cause laterality defects.') add(52,'Placental barrier','Separates maternal blood in intervillous space from fetal capillary blood. Early barrier: syncytiotrophoblast, cytotrophoblast, villous connective tissue and fetal capillary endothelium. By late pregnancy cytotrophoblast becomes discontinuous and barrier thins, facilitating exchange. It allows gases, nutrients, IgG and some drugs; it is not an absolute barrier to pathogens/drugs.','Maternal and fetal blood normally do not mix. Rh sensitization follows fetal RBC entry into maternal circulation, prevented with anti-D immunoglobulin where indicated.') add(53,'Peripheral heart: terminology note and fetal circulation','“Peripheral heart” is not a standard gross-anatomy heading. If your PYQ means <b>fetal circulation</b>: oxygenated blood from placenta reaches umbilical vein, passes mainly through ductus venosus to IVC, right atrium, foramen ovale to left atrium and aorta; right ventricular output largely passes via ductus arteriosus to descending aorta, then umbilical arteries to placenta. At birth, foramen ovale, ductus arteriosus and ductus venosus close.','Verify the exact wording in your university paper. If it meant “primitive heart”, revise heart-tube formation, looping and septation alongside Topic 42.') add(54,'Layers of retina','From outer to inner: 1 retinal pigment epithelium, 2 rods/cones, 3 external limiting membrane, 4 outer nuclear, 5 outer plexiform, 6 inner nuclear, 7 inner plexiform, 8 ganglion cell, 9 nerve fibre, 10 internal limiting membrane. Light passes from vitreous side to photoreceptors; neural signal travels back to ganglion cell axons forming optic nerve.','Macula has high cone density; fovea centralis has maximal visual acuity. Retinal detachment separates neurosensory retina from pigment epithelium.') add(55,'Thoraco-abdominal diaphragm','Dome-shaped musculotendinous partition between thorax and abdomen. Origins: xiphoid (sternal), lower six ribs/costal cartilages (costal), crura and arcuate ligaments (lumbar); insertion into central tendon. Motor: phrenic nerve C3-C5. Sensory: phrenic centrally, lower intercostals peripherally. Principal muscle of inspiration: descent increases thoracic vertical diameter.','Phrenic irritation refers pain to shoulder (C3-C5). Unilateral paralysis gives raised hemidiaphragm and paradoxical movement.') add(56,'Factors maintaining medial longitudinal arch','Keystone is head of talus. Passive supports: plantar aponeurosis, plantar calcaneonavicular (spring) ligament, deltoid ligament and interlocking bone shape. Active supports: tibialis posterior is chief, assisted by tibialis anterior, flexor hallucis longus, flexor digitorum longus, fibularis longus and intrinsic muscles.','Failure of spring ligament or tibialis posterior leads to acquired flatfoot. Windlass action of plantar aponeurosis raises arch during toe-off.') add(57,'Deep perineal pouch','Space between perineal membrane inferiorly and superior fascia of urogenital diaphragm superiorly. <b>Male:</b> membranous urethra, external urethral sphincter, deep transverse perineal muscles, bulbourethral glands, dorsal neurovascular structures of penis. <b>Female:</b> urethra, part of vagina, external urethral sphincter complex, deep transverse perineal muscles and dorsal neurovascular structures of clitoris.','Rupture of membranous urethra allows urine into deep pouch and may spread into extraperitoneal pelvis; it does not enter superficial pouch if perineal membrane is intact.') sections=[('Lower limb, gluteal region and back',range(1,2)),('Abdomen and gastrointestinal tract',range(2,3)),('Pelvis and perineum',range(3,4)),('Embryology',range(4,5)),('Abdomen and lower limb',range(5,13)),('Embryology and regional anatomy',range(13,16)),('Abdominal viscera, histology and perineum',range(16,19)),('Lower limb and neuroanatomy',range(19,21)),('Portal region and abdominal wall',range(21,23)),('Histology, embryology and peritoneum',range(23,31)),('Abdominal viscera and gut development',range(31,43)),('Hip, perineum and diaphragm',range(43,51)),('Embryology, placenta and thorax',range(51,58))] # better actual grouping map based starts breaks={1:'LOWER LIMB AND BACK',2:'ABDOMEN: VISCERA, VESSELS AND PERITONEUM',3:'PELVIS, PERINEUM AND EMBRYOLOGY',5:'ABDOMEN AND LOWER LIMB',13:'EMBRYOLOGY, RETROPERITONEUM AND HISTOLOGY',19:'LOWER LIMB AND LUMBAR PLEXUS',21:'PORTAL REGION, ABDOMINAL WALL AND HISTOLOGY',25:'PELVIS, GUT AND PERITONEUM',33:'HISTOLOGY, GUT DEVELOPMENT AND ABDOMEN',43:'HIP, PERINEUM AND THORAX',49:'EMBRYOLOGY, PLACENTA AND THORAX'} def diagram(kind): d=Drawing(400,105) ink=colors.HexColor('#174a68'); teal=colors.HexColor('#3d8aa8'); pale=colors.HexColor('#ddecf1'); red=colors.HexColor('#c0504d') if kind=='portal': d.add(Line(200,10,200,92,strokeColor=ink,strokeWidth=4)); d.add(String(207,84,'Portal vein',fontSize=8,fillColor=ink)); d.add(Line(120,20,200,43,strokeColor=teal,strokeWidth=3)); d.add(String(65,14,'Splenic vein',fontSize=8)); d.add(Line(280,20,200,43,strokeColor=teal,strokeWidth=3)); d.add(String(265,14,'SMV',fontSize=8)); d.add(Line(200,77,150,98,strokeColor=red,strokeWidth=2));d.add(Line(200,77,250,98,strokeColor=red,strokeWidth=2));d.add(String(120,96,'R branch',fontSize=7));d.add(String(250,96,'L branch',fontSize=7)) elif kind=='knee': d.add(Rect(145,66,110,22,fillColor=pale,strokeColor=ink));d.add(Circle(170,54,19,fillColor=pale,strokeColor=ink));d.add(Circle(230,54,19,fillColor=pale,strokeColor=ink));d.add(Rect(151,20,38,30,fillColor=pale,strokeColor=ink));d.add(Rect(211,20,38,30,fillColor=pale,strokeColor=ink));d.add(String(95,89,'Femur',fontSize=8));d.add(String(99,48,'Tibia',fontSize=8));d.add(String(260,48,'Fibula',fontSize=8));d.add(Line(190,61,212,34,strokeColor=red,strokeWidth=3));d.add(Line(212,61,190,34,strokeColor=red,strokeWidth=3));d.add(String(270,66,'Cruciates',fontSize=8,fillColor=red)) elif kind=='uterus': d.add(Polygon([165,87,235,87,265,55,255,25,145,25,135,55],fillColor=pale,strokeColor=ink));d.add(Line(165,87,120,102,strokeColor=teal,strokeWidth=3));d.add(Line(235,87,280,102,strokeColor=teal,strokeWidth=3));d.add(String(90,96,'Uterine tubes',fontSize=7));d.add(String(168,53,'Uterus',fontSize=8));d.add(Line(200,25,200,5,strokeColor=ink,strokeWidth=6));d.add(String(207,8,'Vagina',fontSize=8));d.add(String(285,42,'Cardinal lig.',fontSize=7,fillColor=red));d.add(Line(255,45,310,45,strokeColor=red)) elif kind=='hepatic': d.add(Rect(80,12,240,80,fillColor=pale,strokeColor=ink)); for x,l in [(100,'II'),(150,'III'),(200,'IV'),(245,'V'),(285,'VI')]: d.add(Line(x,15,x,89,strokeColor=teal));d.add(String(x-5,48,l,fontSize=8)) d.add(String(178,76,'I',fontSize=8));d.add(String(292,70,'VII/VIII',fontSize=8));d.add(String(85,97,'Simplified Couinaud segment map',fontSize=7)) elif kind=='gut': d.add(Rect(65,35,90,35,fillColor=pale,strokeColor=ink));d.add(String(77,48,'Foregut',fontSize=10));d.add(Rect(160,35,90,35,fillColor=colors.HexColor('#fff1c9'),strokeColor=ink));d.add(String(172,48,'Midgut',fontSize=10));d.add(Rect(255,35,90,35,fillColor=colors.HexColor('#f9d6d2'),strokeColor=ink));d.add(String(267,48,'Hindgut',fontSize=10));d.add(Line(155,53,160,53,strokeColor=ink));d.add(Line(250,53,255,53,strokeColor=ink));d.add(String(61,15,'Coeliac',fontSize=8));d.add(String(170,15,'SMA',fontSize=8));d.add(String(268,15,'IMA',fontSize=8)) elif kind=='diaphragm': d.add(Polygon([70,30,100,70,160,82,200,55,240,82,300,70,330,30],fillColor=pale,strokeColor=ink));d.add(Circle(180,61,8,fillColor=colors.white,strokeColor=red));d.add(String(120,95,'T8: IVC',fontSize=8));d.add(String(190,95,'T10: oesophagus',fontSize=8));d.add(String(285,95,'T12: aorta',fontSize=8));d.add(String(155,20,'Central tendon',fontSize=8)) else: d.add(Rect(70,25,260,55,fillColor=pale,strokeColor=ink));d.add(String(125,51,'Draw a labelled schematic',fontSize=11,fillColor=ink)) return d diag_for={1:'portal',2:'portal',3:'uterus',5:'hepatic',7:'knee',21:'portal',27:'gut',29:'knee',32:'portal',34:'gut',42:'uterus',45:'diaphragm',49:'diaphragm',55:'diaphragm'} def footer(c,doc): c.saveState(); c.setStrokeColor(colors.HexColor('#91b7c5'));c.line(1.45*cm,1.15*cm,19.5*cm,1.15*cm) c.setFont('Helvetica',7);c.setFillColor(colors.HexColor('#456778'));c.drawString(1.45*cm,.75*cm,'Anatomy: 57-topic rapid university revision | Verify terminology with your department') c.drawRightString(19.5*cm,.75*cm,f'Page {doc.page}') c.restoreState() story=[] story += [Spacer(1,2.3*cm),Paragraph('ANATOMY',styles['Cover']),Paragraph('57-topic rapid revision for university short notes',styles['Cover']),Paragraph('Concise, pointwise answers with high-yield clinical applications and simple diagrams. Use headings in the exam, underline key terms, and add a 4-6 line labelled diagram where marked.',styles['Sub']),Spacer(1,1.1*cm)] intro=[['How to use','For each 5-mark short note: definition/position, 4-6 core points, diagram, then one applied line. For 10 marks: expand headings, relations, blood/nerve supply, and applied anatomy.'],['Diagram key','Several simplified diagrams are included as memory aids, not atlas drawings. Reproduce larger, labelled versions in examination answers.'],['Source base','Gray’s Anatomy for Students; Thieme General Anatomy and Musculoskeletal System; The Developing Human: Clinically Oriented Embryology; Histology: A Text and Atlas.']] tab=Table([[Paragraph('<b>'+a+'</b>',styles['Body2']),Paragraph(b,styles['Body2'])] for a,b in intro],colWidths=[3.3*cm,14.7*cm]);tab.setStyle(TableStyle([('BACKGROUND',(0,0),(0,-1),colors.HexColor('#ddecf1')),('GRID',(0,0),(-1,-1),.35,colors.HexColor('#aac5cf')),('VALIGN',(0,0),(-1,-1),'TOP'),('LEFTPADDING',(0,0),(-1,-1),7),('RIGHTPADDING',(0,0),(-1,-1),7),('TOPPADDING',(0,0),(-1,-1),6),('BOTTOMPADDING',(0,0),(-1,-1),6)]));story += [tab,PageBreak()] for n,title,core,tip in T: if n in breaks: story.append(Paragraph(breaks[n],styles['Section'])) story.append(Paragraph(f'{n}. {title}',styles['Topic'])) story.append(Paragraph(core,styles['Body2'])) if n in diag_for: story.append(diagram(diag_for[n]));story.append(Paragraph('Schematic only: redraw larger and label in the answer book.',styles['Small'])) if tip: story.append(Paragraph('<b>Applied / scoring line:</b> '+tip,styles['Tip'])) story.append(Spacer(1,3)) story.append(PageBreak());story.append(Paragraph('Last-minute checklist',styles['Section'])) check=['For relation questions, state the structure first, then list anterior/posterior or wall-by-wall relations.','For development answers: embryological source -> timing/process -> adult derivatives -> two anomalies.','For histology: identify lining, glands/cells, muscularis, distinguishing feature, and one clinical correlation.','For vessels: origin/formation -> course -> branches/tributaries -> termination -> applied anatomy.','For diagrams: use pencil, keep labels horizontal, and avoid overcrowding.'] for x in check: story.append(Paragraph('• '+x,styles['Body2'])) story.append(Spacer(1,10));story.append(Paragraph('Reference texts consulted',styles['Topic'])) story.append(Paragraph('Gray’s Anatomy for Students, 4th ed.; General Anatomy and Musculoskeletal System (Thieme Atlas); The Developing Human: Clinically Oriented Embryology; Histology: A Text and Atlas with Correlated Cell and Molecular Biology. This is an exam-revision aid, not a substitute for your prescribed textbook or local teaching.',styles['Body2'])) doc=SimpleDocTemplate(OUT,pagesize=A4,rightMargin=1.45*cm,leftMargin=1.45*cm,topMargin=1.35*cm,bottomMargin=1.55*cm,title='Anatomy 57 Topic Revision') doc.build(story,onFirstPage=footer,onLaterPages=footer) print(OUT) PY python "/tmp/workspace/anatomy-revision-pdf/src/build_pdf.py" python - <<'PY' from pypdf import PdfReader p='/tmp/workspace/anatomy-revision-pdf/output/Anatomy_57_Topic_Revision.pdf' r=PdfReader(p) text=''.join(page.extract_text() or '' for page in r.pages) print('pages',len(r.pages),'topics',sum((f'{i}. ' in text) for i in range(1,58)),'bytes',__import__('os').path.getsize(p)) print(text[:300]) PY

labelled diagram portal vein formation course and tributaries anatomy

python - <<'PY' from pypdf import PdfReader p='/tmp/workspace/anatomy-revision-pdf/output/Anatomy_57_Topic_Revision.pdf' r=PdfReader(p) assert len(r.pages) >= 10 text='\n'.join(pg.extract_text() or '' for pg in r.pages) required=['Femoral canal','Portal vein','Support','Descent of testis','Hepatic segments','Deep perineal pouch','Gastrulation','Layers of retina'] print({x:(x in text) for x in required}) print('encrypted',r.is_encrypted,'pages',len(r.pages)) PY

~/anatomy-revision-pdf/src/build_pdf.py

python "/tmp/workspace/anatomy-revision-pdf/src/build_pdf.py" && python - <<'PY' from pypdf import PdfReader from os.path import getsize p='/tmp/workspace/anatomy-revision-pdf/output/Anatomy_57_Topic_Revision.pdf' r=PdfReader(p) t='\n'.join(x.extract_text() or '' for x in r.pages) missing=[str(i) for i in range(1,58) if f'{i}. ' not in t] print('PDF_OK',len(r.pages),'pages',getsize(p),'bytes','missing_topic_numbers',missing) print('peripheral_heart_correct', 'calf muscle pump' in t) PY

labelled anatomical diagram femoral canal adductor canal hip joint knee joint arches of foot lower limb

lower limb anatomy AND education

lower limb anatomy femoral canal adductor canal knee hip joint overview NCBI Bookshelf

~/

mkdir -p "/tmp/workspace/lower-limb-university-notes/src" "/tmp/workspace/lower-limb-university-notes/output" && cat > "/tmp/workspace/lower-limb-university-notes/src/build.py" <<'PY' from reportlab.lib.pagesizes import A4 from reportlab.platypus import SimpleDocTemplate,Paragraph,Spacer,PageBreak,Table,TableStyle,KeepTogether from reportlab.lib.styles import getSampleStyleSheet,ParagraphStyle from reportlab.lib import colors from reportlab.lib.units import cm from reportlab.lib.enums import TA_CENTER from reportlab.graphics.shapes import Drawing,Rect,Line,String,Circle,Polygon from pypdf import PdfReader import os OUT='/tmp/workspace/lower-limb-university-notes/output/Lower_Limb_University_Short_Answers.pdf' s=getSampleStyleSheet() s.add(ParagraphStyle(name='Title2',parent=s['Title'],fontSize=23,leading=28,textColor=colors.HexColor('#123d57'),alignment=TA_CENTER,spaceAfter=12)) s.add(ParagraphStyle(name='H1x',parent=s['Heading1'],fontSize=17,leading=21,textColor=colors.white,backColor=colors.HexColor('#175a78'),borderPadding=7,spaceBefore=9,spaceAfter=8)) s.add(ParagraphStyle(name='H2x',parent=s['Heading2'],fontSize=13,leading=16,textColor=colors.HexColor('#123d57'),spaceBefore=9,spaceAfter=5,keepWithNext=True)) s.add(ParagraphStyle(name='B',parent=s['BodyText'],fontSize=8.7,leading=11.25,spaceAfter=4)) s.add(ParagraphStyle(name='Flow',parent=s['BodyText'],fontSize=8.5,leading=11,alignment=TA_CENTER,textColor=colors.HexColor('#123d57'),backColor=colors.HexColor('#e5f2f6'),borderColor=colors.HexColor('#78a9ba'),borderWidth=.5,borderPadding=6,spaceBefore=3,spaceAfter=6)) s.add(ParagraphStyle(name='App',parent=s['BodyText'],fontSize=8.4,leading=10.8,textColor=colors.HexColor('#6a3415'),backColor=colors.HexColor('#fff1da'),borderPadding=6,spaceAfter=6)) s.add(ParagraphStyle(name='Note',parent=s['BodyText'],fontSize=7.4,leading=9,textColor=colors.HexColor('#4f6570'),alignment=TA_CENTER)) def diag(k): d=Drawing(420,120); ink=colors.HexColor('#174b68'); blue=colors.HexColor('#3b91b1'); pale=colors.HexColor('#dceef3'); red=colors.HexColor('#bd4a45') def lab(x,y,t,fs=7,c=ink): d.add(String(x,y,t,fontSize=fs,fillColor=c)) if k=='femoral': d.add(Rect(120,18,170,70,fillColor=pale,strokeColor=ink));d.add(Line(120,88,290,88,strokeColor=red,strokeWidth=3));lab(145,96,'Inguinal ligament',8,red); d.add(Rect(138,30,35,48,fillColor=colors.white,strokeColor=ink));d.add(Rect(180,30,35,48,fillColor=colors.white,strokeColor=ink));d.add(Rect(222,30,35,48,fillColor=colors.white,strokeColor=ink));lab(137,53,'N',11);lab(179,53,'A',11);lab(221,53,'V',11);lab(252,53,'Canal',8);lab(126,7,'Lacunar ligament (medial)',7);d.add(Line(258,30,258,15,strokeColor=ink));lab(85,52,'Lateral',8);lab(300,52,'Medial',8) elif k=='adductor': d.add(Polygon([100,25,210,95,325,25],fillColor=pale,strokeColor=ink));lab(87,17,'Vastus medialis',8);lab(250,17,'Adductor longus/magnus',8);lab(165,104,'Sartorius + subsartorial fascia (roof)',8);d.add(Circle(205,55,9,fillColor=red,strokeColor=ink));lab(216,55,'Femoral artery',7);d.add(Circle(188,55,7,fillColor=blue,strokeColor=ink));lab(216,43,'Femoral vein',7);d.add(Line(175,70,225,70,strokeColor=ink));lab(178,75,'Saphenous n.',7) elif k=='hip': d.add(Circle(188,63,31,fillColor=pale,strokeColor=ink));d.add(Polygon([205,82,330,105,315,25,205,43],fillColor=colors.white,strokeColor=ink));lab(150,102,'Head of femur',8);lab(275,104,'Neck',8);lab(80,67,'Acetabulum',8);d.add(Line(157,40,130,24,strokeColor=red,strokeWidth=2));lab(43,18,'Iliofemoral',8,red);d.add(Line(210,43,255,22,strokeColor=red,strokeWidth=2));lab(258,17,'Pubofemoral',8,red);d.add(Line(213,82,260,95,strokeColor=red,strokeWidth=2));lab(265,92,'Ischiofemoral',8,red) elif k=='knee': d.add(Rect(125,78,150,22,fillColor=pale,strokeColor=ink));d.add(Circle(165,64,20,fillColor=pale,strokeColor=ink));d.add(Circle(235,64,20,fillColor=pale,strokeColor=ink));d.add(Rect(148,18,42,40,fillColor=colors.white,strokeColor=ink));d.add(Rect(210,18,42,40,fillColor=colors.white,strokeColor=ink));d.add(Line(181,74,222,26,strokeColor=red,strokeWidth=3));d.add(Line(220,74,181,26,strokeColor=red,strokeWidth=3));lab(282,55,'ACL/PCL',8,red);lab(92,92,'Femur',8);lab(96,39,'Tibia',8);lab(270,39,'Fibula',8);lab(135,7,'Menisci',8) elif k=='foot': d.add(Polygon([70,38,130,25,245,35,350,70,250,88,115,77],fillColor=pale,strokeColor=ink));d.add(Line(120,33,250,75,strokeColor=red,strokeWidth=2));lab(155,15,'Medial longitudinal arch',8,red);d.add(Line(80,50,340,72,strokeColor=blue,strokeWidth=2));lab(165,100,'Transverse arch',8,blue);lab(52,65,'Calcaneus',7);lab(285,32,'Metatarsals',7);lab(342,75,'Toes',7) elif k=='plexus': for y,t in [(100,'L1'),(82,'L2'),(64,'L3'),(46,'L4')]: lab(85,y,t,9);d.add(Line(110,y,200,72,strokeColor=ink)) for y,t in [(95,'Iliohypogastric'),(82,'Ilioinguinal'),(69,'Genitofemoral'),(56,'Lat. cutaneous'),(43,'Femoral'),(30,'Obturator')]:d.add(Line(200,72,320,y,strokeColor=blue));lab(325,y-3,t,7) lab(155,108,'Lumbar plexus in psoas major',8) elif k=='popliteal': d.add(Polygon([205,105,115,18,205,40,295,18],fillColor=pale,strokeColor=ink));lab(72,13,'Biceps femoris',7);lab(285,13,'Semimembranosus',7);lab(104,112,'Lat. gastrocnemius',7);lab(260,112,'Med. gastrocnemius',7);d.add(Line(205,82,205,43,strokeColor=ink,strokeWidth=4));lab(214,72,'Tibial n.',7);d.add(Line(190,82,190,43,strokeColor=blue,strokeWidth=5));lab(213,57,'Popliteal v.',7);d.add(Line(175,82,175,43,strokeColor=red,strokeWidth=5));lab(213,43,'Popliteal a.',7) elif k=='gluteal': d.add(Rect(100,20,220,80,fillColor=pale,strokeColor=ink));d.add(Line(210,20,210,100,strokeColor=ink));d.add(Line(100,60,320,60,strokeColor=ink));lab(117,85,'Safe injection',8,red);d.add(Circle(145,82,7,fillColor=red,strokeColor=red));lab(225,40,'Sciatic nerve',8,red);d.add(Line(240,55,290,20,strokeColor=red,strokeWidth=3));lab(133,5,'Buttock: use superolateral quadrant',8) elif k=='fascia': d.add(Rect(80,28,260,62,fillColor=pale,strokeColor=ink));d.add(Line(120,30,120,88,strokeColor=blue,strokeWidth=3));d.add(Line(215,30,215,88,strokeColor=blue,strokeWidth=3));lab(88,95,'Posterior layer',7);lab(165,95,'Middle layer',7);lab(245,95,'Anterior layer',7);lab(128,58,'Erector spinae',8);lab(230,58,'Quadratus lumborum',8) else: d.add(Rect(80,30,260,55,fillColor=pale,strokeColor=ink));lab(150,55,'Labelled examination schematic',11) return d items=[ ('1. Femoral canal','A short conical medial compartment of the femoral sheath, extending from the femoral ring to the lower end of the sheath. It is about 1.25 cm long and allows expansion of the femoral vein.','<b>Femoral ring boundaries:</b> anterior - inguinal ligament; posterior - pectineal ligament and fascia over pectineus; medial - lacunar ligament; lateral - femoral vein. <b>Contents:</b> loose areolar tissue, fat, lymphatics and deep inguinal (Cloquet) node.','Femoral ring → femoral canal → saphenous opening', 'femoral','<b>Femoral hernia:</b> enters through femoral ring, descends in canal and may emerge below/lateral to pubic tubercle. It is more common in females and readily strangulates. Lacunar ligament must not be cut blindly because an aberrant obturator artery may be present.'), ('7 and 29. Movements, locking and unlocking of knee','The knee is a modified hinge synovial joint. Flexion and extension are the principal movements; rotation is possible only when the knee is flexed.','<b>Extension:</b> quadriceps femoris. <b>Flexion:</b> hamstrings, gracilis, sartorius, gastrocnemius and popliteus. <b>Medial rotation in flexion:</b> semitendinosus, semimembranosus, sartorius, gracilis and popliteus. <b>Lateral rotation:</b> biceps femoris. In terminal extension, femur rotates medially on fixed tibia, or tibia rotates laterally on fixed femur: this is locking. Popliteus unlocks knee by the reverse rotation.','Flexion → rotation possible → terminal extension → ligament tightening → locking → popliteus action → unlocking','knee','<b>Applied anatomy:</b> locking permits economical standing. Popliteus is the “key” to unlocking. Twisting trauma with a planted foot can injure menisci and cruciate ligaments; an unhappy triad classically involves ACL, tibial collateral ligament and medial meniscus.'), ('10. Adductor canal','A musculoaponeurotic tunnel in the middle third of thigh, extending from apex of femoral triangle to adductor hiatus. It conducts vessels from anterior to posterior thigh.','<b>Boundaries:</b> anterolateral - vastus medialis; posteromedial/floor - adductor longus above and adductor magnus below; roof - sartorius and subsartorial fascia. <b>Contents:</b> femoral artery and vein, saphenous nerve, nerve to vastus medialis and descending genicular vessels. Femoral vessels pass through adductor hiatus to become popliteal vessels; saphenous nerve leaves before the hiatus.','Femoral triangle → adductor canal → adductor hiatus → popliteal fossa','adductor','<b>Applied anatomy:</b> adductor canal block provides medial knee and leg analgesia with relative preservation of quadriceps power, unlike a proximal femoral nerve block. The saphenous nerve may be injured in medial knee procedures.'), ('11. Thoracolumbar fascia','A strong fascial complex in the lumbar region that encloses deep back muscles and gives attachment to trunk muscles.','It has <b>posterior, middle and anterior layers.</b> Posterior layer attaches to spinous processes; middle layer attaches to transverse processes; anterior layer covers anterior surface of quadratus lumborum. Posterior and middle layers enclose erector spinae. Middle and anterior layers enclose quadratus lumborum. It gives origin to latissimus dorsi, internal oblique and transversus abdominis.','Three fascial layers → muscular compartments → force transmission → trunk stability','fascia','<b>Applied anatomy:</b> the fascia transmits load between trunk and limbs and contributes to lumbopelvic stability. Myofascial pain and lumbar strain may involve this region.'), ('12 and 43. Hip joint and its ligaments','A multiaxial ball-and-socket synovial joint between the head of femur and lunate surface of acetabulum. The acetabular labrum deepens the socket.','<b>Capsule:</b> from acetabular rim/transverse ligament to intertrochanteric line anteriorly and neck posteriorly. <b>Iliofemoral ligament:</b> strongest, Y-shaped, checks hyperextension. <b>Pubofemoral:</b> checks excessive abduction and extension. <b>Ischiofemoral:</b> posterior, checks extension/medial rotation. <b>Ligament of head:</b> carries acetabular branch of obturator artery in children. Blood supply is chiefly retinacular branches of medial circumflex femoral artery.','Acetabulum + labrum → capsule → capsular ligaments → stable weight-bearing hip','hip','<b>Applied anatomy:</b> posterior hip dislocation may damage sciatic nerve. Intracapsular fracture neck of femur can disrupt retinacular arteries and cause avascular necrosis. The capsule is relatively weak inferomedially.'), ('18. Structures under cover of gluteus maximus','After reflecting gluteus maximus, the following are seen in the gluteal region.','<b>Muscles/bony structures:</b> greater trochanter with trochanteric bursa, ischial tuberosity with ischial bursa, gluteus medius, piriformis, obturator internus with superior/inferior gemelli, quadratus femoris and upper hamstrings. <b>Nerves/vessels:</b> sciatic nerve, posterior femoral cutaneous nerve, inferior gluteal nerve and vessels, pudendal nerve/internal pudendal vessels, nerve to obturator internus and nerve to quadratus femoris.','Reflect gluteus maximus → identify piriformis → locate structures above/below piriformis','gluteal','<b>Applied anatomy:</b> give gluteal intramuscular injection in superolateral quadrant or ventrogluteal site to avoid sciatic nerve and major vessels. Piriformis syndrome may irritate the sciatic nerve.'), ('19 and 56. Arches of foot: supports and functions','The foot has medial and lateral longitudinal arches and a transverse arch. The medial longitudinal arch is the higher, more elastic arch; head of talus is its keystone.','<b>Passive supports:</b> shape/interlocking of bones, plantar aponeurosis, plantar calcaneonavicular (spring) ligament, long and short plantar ligaments. <b>Dynamic supports:</b> tibialis posterior is chief for medial arch; tibialis anterior, flexor hallucis longus, flexor digitorum longus, fibularis longus and intrinsic muscles assist. <b>Functions:</b> bear and distribute body weight, absorb shock, adapt to uneven surfaces, act as a spring/lever in gait and protect sole structures.','Bone shape + ligaments + plantar aponeurosis + muscle tendons → maintained arches → spring and weight distribution','foot','<b>Applied anatomy:</b> tibialis posterior dysfunction or spring-ligament failure may cause acquired pes planus. In windlass mechanism, dorsiflexion of toes tightens plantar aponeurosis and elevates medial arch at toe-off.'), ('20. Lumbar plexus','The lumbar plexus is formed in the substance of psoas major by anterior rami of L1-L4, often receiving T12 contribution. L4 also contributes to lumbosacral trunk.','<b>Branches:</b> iliohypogastric L1; ilioinguinal L1; genitofemoral L1-L2; lateral cutaneous nerve of thigh L2-L3; femoral L2-L4 posterior divisions; obturator L2-L4 anterior divisions; accessory obturator L3-L4 may occur.','Anterior rami T12/L1-L4 → plexus in psoas → short branches + femoral + obturator + lumbosacral trunk','plexus','<b>Applied anatomy:</b> femoral nerve injury weakens knee extension and reduces patellar reflex. Obturator lesion weakens thigh adduction. Lateral cutaneous nerve entrapment below inguinal ligament causes meralgia paraesthetica.'), ('36. Inversion and eversion of foot','These occur mainly at subtalar and transverse tarsal joints. Inversion is greater than eversion.','<b>Inversion:</b> adduction, supination and medial rotation. Chief muscles are tibialis anterior and posterior, assisted by long toe flexors. <b>Eversion:</b> abduction, pronation and lateral rotation. Chief muscles are fibularis longus and brevis, assisted by fibularis tertius.','Subtalar/transverse tarsal joints → inversion (tibialis) or eversion (fibularis) → foot adapts to surface','foot','<b>Applied anatomy:</b> forced inversion commonly sprains lateral ankle ligaments, especially anterior talofibular ligament. In common fibular nerve palsy, eversion is weak; inversion is retained because tibialis posterior is supplied by tibial nerve.'), ('39. Popliteal fossa','A diamond-shaped intermuscular space behind the knee.','<b>Boundaries:</b> superolateral biceps femoris; superomedial semimembranosus and semitendinosus; inferolateral lateral head gastrocnemius/plantaris; inferomedial medial head gastrocnemius. <b>Roof:</b> skin, superficial fascia and deep fascia. <b>Floor:</b> femur, posterior capsule with oblique popliteal ligament, popliteus. <b>Contents superficial to deep:</b> tibial nerve, popliteal vein, popliteal artery. Common fibular nerve runs along lateral boundary; nodes and termination of small saphenous vein are also present.','Thigh vessels → adductor hiatus → popliteal artery/vein → anterior/posterior tibial vessels','popliteal','<b>Applied anatomy:</b> popliteal artery is deepest and vulnerable in posterior knee dislocation. Always assess distal pulses. Baker cyst may present as swelling in popliteal fossa.'), ('47. Hamstring muscles','True hamstrings arise from ischial tuberosity, cross hip and knee, insert below knee and are supplied by tibial division of sciatic nerve.','They are semitendinosus, semimembranosus, long head of biceps femoris and hamstring part of adductor magnus. Short head of biceps femoris is not a true hamstring. Their actions are extension of hip and flexion of knee. Semitendinosus/semimembranosus medially rotate flexed leg; biceps femoris laterally rotates it.','Ischial tuberosity → posterior thigh → cross knee → hip extension + knee flexion','knee','<b>Applied anatomy:</b> hamstring strain, especially biceps femoris long head, occurs in sprinting. Avulsion from ischial tuberosity can occur in adolescents. Sciatic nerve injury weakens knee flexion.'), ('53. Peripheral heart (calf muscle pump)','The peripheral heart is the venous pumping action of calf muscles, mainly soleus and gastrocnemius, aided by foot movements.','During contraction, muscles compress deep veins and propel blood proximally. Venous valves prevent retrograde flow. Perforator valves normally direct flow from superficial to deep veins. On relaxation, deep veins refill from superficial veins and distal segments.','Walking → calf contraction → deep-vein compression → proximal valve opens → venous return → relaxation/refilling','foot','<b>Applied anatomy:</b> immobility reduces calf pump action and promotes venous stasis and deep-vein thrombosis. Valve incompetence causes venous hypertension, varicosities, oedema and venous ulceration.'),] def footer(c,doc): c.saveState();c.setStrokeColor(colors.HexColor('#9ec3d0'));c.line(1.3*cm,1.12*cm,19.7*cm,1.12*cm);c.setFont('Helvetica',7);c.setFillColor(colors.HexColor('#486875'));c.drawString(1.3*cm,.74*cm,'Lower limb university short answers | diagrams are simplified revision schematics');c.drawRightString(19.7*cm,.74*cm,f'Page {doc.page}');c.restoreState() story=[Spacer(1,2*cm),Paragraph('LOWER LIMB ANATOMY',s['Title2']),Paragraph('University-style short answers with flowcharts and applied anatomy',s['Title2']),Paragraph('Topics selected from your PYQ list: femoral and adductor canals, knee, hip, gluteal region, arches and movements of foot, lumbar plexus, popliteal fossa, hamstrings, thoracolumbar fascia and calf pump.',s['B']),Spacer(1,9)] story.append(Paragraph('<b>Answer pattern for 5-10 marks:</b> Start with definition. Add boundaries/parts/contents in headings. Draw a labelled diagram. End with a relevant applied anatomy point.',s['Flow']));story.append(PageBreak()) for title,intro,points,flow,k,app in items: story.append(Paragraph(title,s['H2x']));story.append(Paragraph('<b>Introduction:</b> '+intro,s['B']));story.append(Paragraph(points,s['B']));story.append(Paragraph('<b>Flowchart</b><br/>'+flow,s['Flow']));story.append(diag(k));story.append(Paragraph('Labelled schematic: reproduce larger with clean leader lines in the examination.',s['Note']));story.append(Paragraph('<b>Applied anatomy:</b> '+app,s['App']));story.append(Spacer(1,5)) story.append(PageBreak());story.append(Paragraph('Rapid final revision',s['H1x'])) for x in ['Femoral canal is medial to femoral vein; femoral nerve lies outside femoral sheath.','Adductor canal contents: femoral artery, femoral vein, saphenous nerve, nerve to vastus medialis.','Knee locks in terminal extension; popliteus unlocks it.','Hip: iliofemoral ligament checks hyperextension; medial circumflex femoral artery is key supply.','Popliteal fossa arrangement superficial to deep: nerve, vein, artery.','Medial arch: talar head keystone; tibialis posterior and spring ligament are central supports.','Lumbar plexus lies in psoas major; femoral is posterior divisions, obturator anterior divisions.']: story.append(Paragraph('• '+x,s['B'])) story.append(Spacer(1,8));story.append(Paragraph('Reference base',s['H2x']));story.append(Paragraph('Gray’s Anatomy for Students, 4th edition; General Anatomy and Musculoskeletal System, Thieme Atlas; selected departmental-standard regional anatomy content. The PDF is a revision aid: use your prescribed text for diagrams at atlas scale.',s['B'])) doc=SimpleDocTemplate(OUT,pagesize=A4,leftMargin=1.3*cm,rightMargin=1.3*cm,topMargin=1.25*cm,bottomMargin=1.5*cm,title='Lower Limb University Short Answers') doc.build(story,onFirstPage=footer,onLaterPages=footer) r=PdfReader(OUT);t=''.join(p.extract_text() or '' for p in r.pages);print(OUT,len(r.pages),os.path.getsize(OUT),all(x in t for x in ['Femoral canal','Adductor canal','Popliteal fossa','Hamstring muscles','Peripheral heart'])) PY python "/tmp/workspace/lower-limb-university-notes/src/build.py"

~/

gastrointestinal anatomy AND education

NCBI Bookshelf portal vein stomach blood supply coeliac trunk anatomy

mkdir -p "/tmp/workspace/abdomen-gi-university-notes/src" "/tmp/workspace/abdomen-gi-university-notes/output" && cat > "/tmp/workspace/abdomen-gi-university-notes/src/build.py" <<'PY' from reportlab.lib.pagesizes import A4 from reportlab.platypus import SimpleDocTemplate,Paragraph,Spacer,PageBreak from reportlab.lib.styles import getSampleStyleSheet,ParagraphStyle from reportlab.lib import colors from reportlab.lib.units import cm from reportlab.lib.enums import TA_CENTER from reportlab.graphics.shapes import Drawing,Rect,Line,String,Circle,Polygon from pypdf import PdfReader import os OUT='/tmp/workspace/abdomen-gi-university-notes/output/Abdomen_and_GI_University_Short_Answers.pdf' s=getSampleStyleSheet();s.add(ParagraphStyle(name='Title2',parent=s['Title'],fontSize=22,leading=27,textColor=colors.HexColor('#123d57'),alignment=TA_CENTER,spaceAfter=11));s.add(ParagraphStyle(name='H1x',parent=s['Heading1'],fontSize=16,leading=20,textColor=colors.white,backColor=colors.HexColor('#175a78'),borderPadding=7,spaceBefore=9,spaceAfter=7));s.add(ParagraphStyle(name='H2x',parent=s['Heading2'],fontSize=12.5,leading=15.5,textColor=colors.HexColor('#123d57'),spaceBefore=9,spaceAfter=4,keepWithNext=True));s.add(ParagraphStyle(name='B',parent=s['BodyText'],fontSize=8.5,leading=11.0,spaceAfter=4));s.add(ParagraphStyle(name='Flow',parent=s['BodyText'],fontSize=8.3,leading=10.7,alignment=TA_CENTER,textColor=colors.HexColor('#123d57'),backColor=colors.HexColor('#e5f2f6'),borderColor=colors.HexColor('#78a9ba'),borderWidth=.5,borderPadding=5,spaceBefore=2,spaceAfter=5));s.add(ParagraphStyle(name='App',parent=s['BodyText'],fontSize=8.2,leading=10.5,textColor=colors.HexColor('#6a3415'),backColor=colors.HexColor('#fff1da'),borderPadding=5,spaceAfter=5));s.add(ParagraphStyle(name='Note',parent=s['BodyText'],fontSize=7.2,leading=8.7,textColor=colors.HexColor('#4f6570'),alignment=TA_CENTER)) def diag(k): d=Drawing(420,112); ink=colors.HexColor('#174b68'); blue=colors.HexColor('#368ead'); pale=colors.HexColor('#dceef3'); red=colors.HexColor('#bd4a45') def L(x,y,t,fs=7,c=ink):d.add(String(x,y,t,fontSize=fs,fillColor=c)) if k=='portal': d.add(Line(210,15,210,93,strokeColor=ink,strokeWidth=4));L(217,73,'Portal vein',8);d.add(Line(112,20,210,47,strokeColor=blue,strokeWidth=3));d.add(Line(307,20,210,47,strokeColor=blue,strokeWidth=3));L(65,15,'Splenic v.',8);L(294,15,'SMV',8);d.add(Line(210,88,160,105,strokeColor=red,strokeWidth=2));d.add(Line(210,88,260,105,strokeColor=red,strokeWidth=2));L(130,100,'Right branch',7);L(265,100,'Left branch',7) elif k=='stomach': d.add(Polygon([120,24,230,25,275,55,250,90,150,85,105,55],fillColor=pale,strokeColor=ink));L(123,11,'Lesser curvature',7);L(255,76,'Greater curvature',7);d.add(Line(140,25,222,25,strokeColor=red,strokeWidth=3));L(145,15,'L/R gastric',7,red);d.add(Line(130,82,245,87,strokeColor=blue,strokeWidth=3));L(155,97,'L/R gastro-omental',7,blue);d.add(Line(104,50,80,34,strokeColor=red,strokeWidth=2));L(25,25,'Short gastric',7,red) elif k=='liver': d.add(Rect(70,15,285,78,fillColor=pale,strokeColor=ink)); for x in [110,155,200,245,290]:d.add(Line(x,17,x,91,strokeColor=blue)) for x,t in [(88,'II'),(130,'III'),(177,'IV'),(222,'V'),(266,'VI'),(310,'VII/VIII')]:L(x,52,t,8) L(193,78,'I',8);L(145,99,'Simplified Couinaud segments',7) elif k=='peritoneum': d.add(Rect(80,17,250,80,fillColor=pale,strokeColor=ink));d.add(Rect(125,44,95,28,fillColor=colors.white,strokeColor=ink));L(143,53,'Stomach',8);L(86,85,'Liver',8);L(225,85,'Pancreas',8);d.add(Line(125,45,105,25,strokeColor=red));L(31,18,'Lesser omentum',7,red);d.add(Line(220,70,294,88,strokeColor=blue));L(295,86,'Lesser sac',7,blue);L(120,5,'Anterior',7);L(244,5,'Posterior',7) elif k=='gut': for x,c,t,sub in [(52,colors.HexColor('#dceef3'),'Foregut','Coeliac'),(164,colors.HexColor('#fff0ca'),'Midgut','SMA'),(276,colors.HexColor('#f7d8d6'),'Hindgut','IMA')]:d.add(Rect(x,35,95,38,fillColor=c,strokeColor=ink));L(x+21,51,t,10);L(x+33,15,sub,8) d.add(Line(147,54,164,54,strokeColor=ink));d.add(Line(259,54,276,54,strokeColor=ink)) elif k=='appendix': d.add(Circle(200,65,30,fillColor=pale,strokeColor=ink));d.add(Line(180,43,150,21,strokeColor=ink));d.add(Line(220,43,251,21,strokeColor=ink));d.add(Line(210,37,268,78,strokeColor=red,strokeWidth=3));L(274,76,'Appendix',8,red);L(171,67,'Caecum',8);L(119,11,'Taeniae converge at base',7);d.add(Line(200,95,200,108,strokeColor=blue));L(205,102,'Ileum',7,blue) elif k=='anal': d.add(Rect(175,18,64,80,fillColor=pale,strokeColor=ink));d.add(Line(175,64,239,64,strokeColor=red,strokeWidth=3));L(245,61,'Pectinate line',8,red);L(70,78,'Upper 2/3: visceral',8);L(70,32,'Lower 1/3: somatic',8);d.add(Line(150,80,175,80,strokeColor=ink));d.add(Line(150,33,175,33,strokeColor=ink)); elif k=='rectus': d.add(Rect(170,18,75,80,fillColor=pale,strokeColor=ink));d.add(Rect(185,28,45,60,fillColor=colors.white,strokeColor=ink));L(190,54,'Rectus',8);d.add(Line(118,63,170,63,strokeColor=red,strokeWidth=2));L(45,59,'Posterior sheath above arcuate line',7,red);d.add(Line(118,30,245,30,strokeColor=blue,strokeWidth=2));L(115,15,'All aponeuroses anterior below arcuate line',7,blue) elif k=='histology': for i,t in enumerate(['Mucosa','Submucosa','Muscularis','Serosa']): d.add(Rect(95,20+i*20,230,18,fillColor=[colors.HexColor('#f8d9d5'),colors.HexColor('#f7edcb'),colors.HexColor('#dceef3'),colors.HexColor('#e0e5e7')][i],strokeColor=ink));L(185,25+i*20,t,8) L(30,96,'Wall layers',8);L(40,15,'Add characteristic glands/cells',7) elif k=='mesentery': d.add(Line(100,88,315,25,strokeColor=red,strokeWidth=4));L(90,96,'DJ flexure',7);L(310,15,'Ileocaecal junction',7);L(160,60,'Crosses: D3 → aorta → IVC → ureter',8,red) return d items=[ ('2 and 21. Portal vein: formation, course, relations and tributaries','The portal vein is a valveless vessel that conveys nutrient-rich blood from the abdominal gastrointestinal tract, spleen, pancreas and gallbladder to hepatic sinusoids.','It is formed <b>behind the neck of pancreas at L2</b> by union of superior mesenteric and splenic veins. It ascends posterior to first part of duodenum, then passes in hepatoduodenal ligament. In the portal triad it lies <b>posterior</b> to common bile duct on right and proper hepatic artery on left. At porta hepatis it divides into right and left branches. Tributaries include left/right gastric, cystic, paraumbilical and superior pancreaticoduodenal veins.','SMV + splenic vein → behind neck of pancreas → behind D1 → hepatoduodenal ligament → porta hepatis → right/left portal branches','portal','<b>Applied anatomy:</b> portal hypertension causes portosystemic collateral enlargement at lower oesophagus, anal canal, around umbilicus and retroperitoneum. During Pringle manoeuvre the hepatoduodenal ligament is compressed to control hepatic inflow.'), ('5. Hepatic segments','The liver is divided into eight functionally independent Couinaud segments based on portal inflow, hepatic venous drainage and biliary drainage.','Segment I is caudate lobe. Segments II and III form left lateral sector; IV is left medial sector, often divided into IVa and IVb. Segments V-VIII form right liver. The middle hepatic vein plane, approximating Cantlie line from gallbladder fossa to IVC, separates functional right and left liver. Portal triads run within segments; hepatic veins lie in intersegmental planes.','Portal pedicle branch → segmental inflow and biliary drainage → independent functional segments → segmental resection','liver','<b>Applied anatomy:</b> segmental resection can remove diseased tissue while preserving viable segments. Caudate lobe has direct venous drainage to IVC and may behave differently in hepatic venous obstruction.'), ('6. Blood supply of stomach','The stomach receives a rich arterial supply from branches of the coeliac trunk and its derivatives.','<b>Lesser curvature:</b> left gastric artery from coeliac trunk and right gastric artery, usually from proper hepatic. <b>Greater curvature:</b> left gastro-omental from splenic and right gastro-omental from gastroduodenal artery. <b>Fundus:</b> short gastric arteries from splenic artery; posterior gastric may also arise from splenic. Corresponding veins drain into portal system: left/right gastric directly to portal vein, short gastric and left gastro-omental to splenic vein, right gastro-omental to SMV.','Coeliac trunk → left gastric + splenic + common hepatic → arterial arcades on curvatures → portal venous drainage','stomach','<b>Applied anatomy:</b> rich anastomosis permits gastric mobilization in surgery. A bleeding posterior duodenal ulcer may erode gastroduodenal artery, while a posterior gastric ulcer may involve splenic artery.'), ('8. Meckel diverticulum','A true congenital diverticulum on the antimesenteric border of ileum caused by persistence of the vitellointestinal duct.','It contains all layers of bowel wall and may contain ectopic gastric or pancreatic tissue. Classic rule of twos: about 2% of population, about 2 feet from ileocaecal junction, about 2 inches long and commonly symptomatic before 2 years. Its blood supply is a persistent vitelline artery branch.','Persistent vitellointestinal duct → Meckel diverticulum → ectopic mucosa/obstruction/bleeding','appendix','<b>Applied anatomy:</b> ectopic gastric mucosa causes ulceration and painless lower gastrointestinal bleeding. It may mimic appendicitis, cause intussusception or intestinal obstruction.'), ('15. Relations of right kidney','The right kidney is retroperitoneal at approximately T12-L3 and lies lower than left kidney because of liver.','<b>Anterior relations:</b> right suprarenal gland, liver, second part of duodenum medially, hepatic flexure and coils of small intestine inferiorly. <b>Posterior relations:</b> diaphragm, 12th rib, psoas major, quadratus lumborum, transversus abdominis; subcostal nerve/vessels, iliohypogastric and ilioinguinal nerves. At hilum arrangement anterior to posterior is renal vein, renal artery, renal pelvis.','Retroperitoneal kidney → anterior visceral relations + posterior muscular/nerve relations → renal hilum V-A-P','peritoneum','<b>Applied anatomy:</b> posterior renal approach must consider pleura and 12th rib. The close relation of second part of duodenum matters in surgery and trauma.'), ('16. Lymphatic drainage of stomach','Gastric lymphatics accompany arteries and ultimately drain to coeliac nodes.','Nodes include left and right gastric nodes along lesser curvature; left and right gastro-omental nodes along greater curvature; pancreaticosplenic nodes near splenic artery; pyloric and hepatic nodes. Efferents pass to coeliac nodes, intestinal trunk and cisterna chyli.','Gastric wall → perigastric arterial nodes → coeliac nodes → intestinal trunk → thoracic duct','stomach','<b>Applied anatomy:</b> gastric carcinoma spreads along these nodal chains. Left supraclavicular (Virchow) node may enlarge through thoracic duct drainage.'), ('23. Microanatomy of stomach','The gastric wall consists of mucosa, submucosa, muscularis externa and serosa. The mucosa has simple columnar surface mucous cells, gastric pits and glands, but no villi.','<b>Fundic/body glands:</b> mucous neck cells, parietal cells producing HCl and intrinsic factor, chief cells producing pepsinogen, enteroendocrine cells and stem cells. <b>Cardiac glands:</b> mainly mucous. <b>Pyloric glands:</b> branched/coiled, mucous-rich and contain G cells. Muscularis externa has outer longitudinal, middle circular and inner oblique layers.','Surface mucous epithelium → gastric pits → region-specific glands → secretion and protection','histology','<b>Applied anatomy:</b> autoimmune destruction of parietal cells causes loss of intrinsic factor and pernicious anaemia. Helicobacter pylori commonly colonizes antrum and may produce peptic ulcer disease.'), ('27 and 34. Foregut and midgut derivatives','The primitive gut is divided by arterial supply into foregut, midgut and hindgut.','<b>Foregut:</b> pharynx, lower respiratory tract, oesophagus, stomach, proximal duodenum up to major papilla, liver, gallbladder, biliary apparatus and pancreas. Spleen is associated with foregut but mesenchymal in origin. Supply: coeliac trunk. <b>Midgut:</b> distal duodenum, jejunum, ileum, caecum, appendix, ascending colon and proximal two-thirds transverse colon. Supply: SMA.','Primitive gut → foregut (coeliac) | midgut (SMA) | hindgut (IMA)','gut','<b>Applied anatomy:</b> foregut rotation accounts for lesser sac and pancreas position. Midgut rotation defects can result in volvulus or malrotation; persistent vitelline duct produces Meckel diverticulum.'), ('28 and 32. Lesser sac and epiploic foramen','The lesser sac or omental bursa is a peritoneal recess posterior to stomach and lesser omentum. It communicates with greater sac through epiploic foramen.','<b>Lesser sac boundaries:</b> anterior - stomach, lesser omentum, gastrocolic ligament; posterior - pancreas, left kidney/suprarenal and transverse mesocolon; superior - caudate lobe/diaphragm; inferior - transverse colon/mesocolon. <b>Epiploic foramen:</b> anterior hepatoduodenal ligament, posterior IVC, superior caudate lobe, inferior first part duodenum.','Dorsal mesogastrium expands → stomach rotates → lesser sac forms behind stomach → communicates via epiploic foramen','peritoneum','<b>Applied anatomy:</b> fluid may collect in lesser sac. A finger through epiploic foramen can help compress portal triad in Pringle manoeuvre. Internal herniation through the foramen is possible.'), ('31. Vermiform appendix','A blind, worm-like diverticulum from posteromedial caecum, usually 6-9 cm long. Its base lies at convergence of three taeniae coli, about 2 cm below ileocaecal junction.','Positions: retrocaecal most common, pelvic, subcaecal, pre-ileal and post-ileal. Mesoappendix contains appendicular artery, an end artery from ileocolic branch of SMA. The appendix contains abundant lymphoid tissue.','Caecum → convergence of taeniae → appendix base → variable tip position → appendicular end artery','appendix','<b>Applied anatomy:</b> visceral pain begins around umbilicus (T10) and localizes at McBurney point after parietal peritoneum becomes inflamed. End-artery supply contributes to gangrene in appendicitis.'), ('33. Histology of pancreas','The pancreas is a lobulated mixed gland with exocrine serous acini and endocrine islets of Langerhans.','Acinar cells are pyramidal with basal basophilia and apical zymogen granules. Centroacinar cells begin intercalated ducts. Duct sequence: intercalated, intralobular, interlobular ducts. Striated ducts and myoepithelial cells are absent. Islets have beta cells for insulin, alpha cells for glucagon, delta cells for somatostatin and PP cells.','Acini → centroacinar cells → ducts → pancreatic juice; islets → hormones → bloodstream','histology','<b>Applied anatomy:</b> absence of striated ducts helps distinguish pancreas from salivary gland. Chronic pancreatitis damages acini and causes exocrine insufficiency; islet loss causes diabetes mellitus.'), ('35. Anal canal','A 4 cm terminal part of large intestine from anorectal junction to anal verge. Pectinate line divides embryological, vascular, lymphatic and neural territories.','<b>Above pectinate line:</b> endoderm, columnar epithelium, superior rectal vessels, internal iliac lymph nodes, visceral innervation and relatively painless. <b>Below:</b> ectoderm, stratified squamous epithelium, inferior rectal vessels, superficial inguinal nodes, pudendal somatic innervation and painful. Internal sphincter is smooth muscle; external sphincter skeletal muscle.','Upper anal canal: visceral territory → pectinate line → lower anal canal: somatic territory','anal','<b>Applied anatomy:</b> internal haemorrhoids are usually painless; external haemorrhoids are painful. Pectinate line must be stated in anorectal cancer lymphatic spread.'), ('37. Coeliac trunk','A short unpaired ventral branch of abdominal aorta arising at T12 just below aortic hiatus. It supplies foregut structures.','Its three principal branches are <b>left gastric, splenic and common hepatic arteries.</b> Left gastric supplies lower oesophagus and lesser curvature. Splenic artery supplies spleen, pancreas, fundus and greater curvature. Common hepatic gives gastroduodenal and proper hepatic branches; the latter supplies liver and gives right gastric artery.','Abdominal aorta at T12 → coeliac trunk → left gastric + splenic + common hepatic → foregut organs','gut','<b>Applied anatomy:</b> coeliac axis compression by median arcuate ligament can cause postprandial epigastric pain. Collaterals between coeliac and SMA systems occur through pancreaticoduodenal arcades.'), ('38. Rectus sheath','The rectus sheath is an aponeurotic enclosure of rectus abdominis and pyramidalis. It is formed by aponeuroses of external oblique, internal oblique and transversus abdominis.','<b>Above arcuate line:</b> anterior wall = external oblique + anterior internal oblique; posterior wall = posterior internal oblique + transversus abdominis. <b>Below arcuate line:</b> all three aponeuroses pass anterior to rectus; posteriorly only transversalis fascia is present. Contents include rectus, pyramidalis, superior/inferior epigastric vessels and terminal thoracoabdominal nerves.','Three muscle aponeuroses → split around rectus above arcuate line → all anterior below arcuate line','rectus','<b>Applied anatomy:</b> inferior epigastric vessels enter sheath near arcuate line. Posterior wall deficiency below arcuate line permits spread of rectus sheath haematoma.'), ('40. Microanatomy of liver','The classical hepatic lobule is a roughly hexagonal unit with a central vein and portal triads at its periphery.','Hepatocyte plates radiate toward central vein. Mixed portal venous and arterial blood flows through sinusoids to central vein. Kupffer cells lie in sinusoids; space of Disse lies between sinusoidal endothelium and hepatocytes and contains stellate cells. Bile flows oppositely through canaliculi toward portal triads. Acinus zones: zone 1 periportal, zone 2 intermediate and zone 3 centrilobular.','Portal triad → sinusoids → central vein → hepatic veins; bile canaliculi → portal triad','histology','<b>Applied anatomy:</b> zone 3 is most susceptible to hypoxia and many toxins. Fibrosis in space of Disse impairs exchange and contributes to portal hypertension.'), ('50. Root of mesentery','The root of mesentery is the oblique line of attachment of mesentery of jejunum and ileum to posterior abdominal wall, about 15 cm long.','It extends from duodenojejunal flexure left of L2 to ileocaecal junction near right sacroiliac region. From left to right it crosses third part duodenum, aorta, IVC, right ureter, right psoas major and gonadal vessels. It contains SMA/SMV branches, lymphatics, nodes, autonomic nerves and fat.','DJ flexure → oblique root across retroperitoneal structures → ileocaecal junction → mobile small-intestinal mesentery','mesentery','<b>Applied anatomy:</b> mesenteric volvulus twists vessels and can cause bowel ischaemia. During surgery the root is an important landmark for identifying SMA and SMV.')] def footer(c,doc): c.saveState();c.setStrokeColor(colors.HexColor('#9ec3d0'));c.line(1.3*cm,1.1*cm,19.7*cm,1.1*cm);c.setFont('Helvetica',7);c.setFillColor(colors.HexColor('#486875'));c.drawString(1.3*cm,.72*cm,'Abdomen and GI university short answers | diagrams are simplified revision schematics');c.drawRightString(19.7*cm,.72*cm,f'Page {doc.page}');c.restoreState() story=[Spacer(1,1.7*cm),Paragraph('ABDOMEN AND GASTROINTESTINAL ANATOMY',s['Title2']),Paragraph('University-style short answers with flowcharts and applied anatomy',s['Title2']),Paragraph('Detailed short-note answers selected from your PYQ list. Use the same heading order in the examination: definition, parts/boundaries/relations, labelled diagram, flowchart, and applied anatomy.',s['B']),Spacer(1,7),Paragraph('<b>Exam technique:</b> For vessels, write formation/origin -> course -> relations -> branches or tributaries -> termination. For histology, write lining -> glands/cells -> wall layers -> identifying feature -> applied point.',s['Flow']),PageBreak()] for title,intro,pts,flow,k,app in items: story.append(Paragraph(title,s['H2x']));story.append(Paragraph('<b>Introduction:</b> '+intro,s['B']));story.append(Paragraph(pts,s['B']));story.append(Paragraph('<b>Flowchart</b><br/>'+flow,s['Flow']));story.append(diag(k));story.append(Paragraph('Labelled schematic: redraw larger and label with straight leader lines in the answer book.',s['Note']));story.append(Paragraph('<b>Applied anatomy:</b> '+app,s['App']));story.append(Spacer(1,4)) story.append(PageBreak());story.append(Paragraph('Rapid final revision',s['H1x'])) for x in ['Portal vein is formed behind neck of pancreas and lies posterior in portal triad.','Stomach: left/right gastric on lesser curvature; gastro-omental arteries on greater curvature.','Epiploic foramen anterior boundary is hepatoduodenal ligament; posterior boundary is IVC.','Appendix base is found by following taeniae coli.','Pectinate line separates visceral from somatic territory in anal canal.','Coeliac trunk supplies foregut; SMA supplies midgut.','Liver: blood flows to central vein; bile flows toward portal triads.','Root of mesentery crosses D3, aorta, IVC, right ureter and right psoas.']: story.append(Paragraph('• '+x,s['B'])) story.append(Spacer(1,7));story.append(Paragraph('Reference base',s['H2x']));story.append(Paragraph('Gray’s Anatomy for Students, 4th edition; Color Atlas of Human Anatomy, Volume 2: Internal Organs; The Developing Human: Clinically Oriented Embryology; Histology: A Text and Atlas with Correlated Cell and Molecular Biology. This is an examination-revision aid.',s['B'])) doc=SimpleDocTemplate(OUT,pagesize=A4,leftMargin=1.3*cm,rightMargin=1.3*cm,topMargin=1.22*cm,bottomMargin=1.48*cm,title='Abdomen and GI University Short Answers');doc.build(story,onFirstPage=footer,onLaterPages=footer) r=PdfReader(OUT);txt=''.join(p.extract_text() or '' for p in r.pages);req=['Portal vein','Hepatic segments','Blood supply of stomach','Meckel diverticulum','Lesser sac','Vermiform appendix','Anal canal','Microanatomy of liver','Root of mesentery'];print(OUT,'pages',len(r.pages),'bytes',os.path.getsize(OUT),'all_topics',all(x in txt for x in req)) PY python "/tmp/workspace/abdomen-gi-university-notes/src/build.py"

python - <<'PY' from pypdf import PdfReader from os.path import getsize p='/tmp/workspace/abdomen-gi-university-notes/output/Abdomen_and_GI_University_Short_Answers.pdf' r=PdfReader(p) text='\n'.join(page.extract_text() or '' for page in r.pages) required=['Portal vein','Hepatic segments','Blood supply of stomach','Meckel diverticulum','Relations of right kidney','Lymphatic drainage of stomach','Microanatomy of stomach','Foregut and midgut derivatives','Lesser sac and epiploic foramen','Vermiform appendix','Histology of pancreas','Anal canal','Coeliac trunk','Rectus sheath','Microanatomy of liver','Root of mesentery'] missing=[x for x in required if x not in text] print({'exists':getsize(p)>0,'pages':len(r.pages),'encrypted':r.is_encrypted,'missing':missing,'bytes':getsize(p)}) PY

labelled anatomy diagram pelvic diaphragm perineal pouches ischioanal fossa broad ligament uterus

NCBI Bookshelf pelvic diaphragm perineal body broad ligament perineal pouch anatomy

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mkdir -p "/tmp/workspace/pelvis-perineum-university-notes/src" "/tmp/workspace/pelvis-perineum-university-notes/output" && cp "/tmp/workspace/abdomen-gi-university-notes/src/build.py" "/tmp/workspace/pelvis-perineum-university-notes/src/build.py" && python - <<'PY' p='/tmp/workspace/pelvis-perineum-university-notes/src/build.py' s=open(p).read() s=s.replace("OUT='/tmp/workspace/abdomen-gi-university-notes/output/Abdomen_and_GI_University_Short_Answers.pdf'", "OUT='/tmp/workspace/pelvis-perineum-university-notes/output/Pelvis_and_Perineum_University_Short_Answers.pdf'") start=s.index('items=['); end=s.index('\ndef footer',start) items='''items=[ ('3. Supports of uterus','The uterus is normally anteverted on the vagina and anteflexed at the level of internal os. Its supports maintain this position and prevent prolapse.','<b>Primary muscular support:</b> pelvic diaphragm, especially levator ani, assisted by perineal body and perineal membrane. <b>Fibromuscular supports:</b> transverse cervical (cardinal/Mackenrodt) ligaments from cervix and upper vagina to lateral pelvic wall; uterosacral ligaments to sacrum; pubocervical ligaments to pubis. <b>Secondary supports:</b> round ligaments maintain anteversion; broad ligament has little true supporting value; upper vagina contributes to fixation.','Pelvic diaphragm + perineal body → cardinal/uterosacral/pubocervical ligaments → normal uterine position','uterus','<b>Applied anatomy:</b> childbirth injury, levator weakness and fascial failure may produce uterine prolapse. At the base of broad ligament, ureter passes inferior to uterine artery: “water under the bridge”.'), ('9. Perineal body','The perineal body, or central tendon of perineum, is a midline fibromuscular mass. It lies between anus and bulb of penis in the male, and between anus and lower vagina in the female.','It receives fibres of external anal sphincter, bulbospongiosus, superficial transverse perineal, deep transverse perineal and levator ani. It is continuous with rectovaginal fascia in female and functions as a central anchoring point for pelvic floor and perineal muscles.','Muscles of urogenital triangle + anal triangle + levator ani → converge at perineal body → pelvic-floor support','perineal','<b>Applied anatomy:</b> obstetric tears through this structure weaken the pelvic floor and predispose to prolapse and incontinence. Episiotomy is planned to avoid an uncontrolled central tear.'), ('22. Inguinal canal: boundaries and contents','The inguinal canal is an oblique 4 cm passage in lower anterior abdominal wall, extending from deep inguinal ring to superficial inguinal ring.','<b>Anterior wall:</b> external oblique aponeurosis, reinforced laterally by internal oblique. <b>Posterior wall:</b> transversalis fascia, reinforced medially by conjoint tendon. <b>Roof:</b> arching fibres of internal oblique and transversus abdominis. <b>Floor:</b> inguinal ligament, reinforced medially by lacunar ligament. <b>Contents:</b> spermatic cord and ilioinguinal nerve in male; round ligament and ilioinguinal nerve in female.','Deep ring → oblique canal → superficial ring; abdominal wall layers → coverings of spermatic cord','inguinal','<b>Applied anatomy:</b> indirect inguinal hernia enters deep ring lateral to inferior epigastric vessels. Direct hernia protrudes through posterior wall medial to inferior epigastric vessels in Hesselbach triangle.'), ('25. Muscles of pelvic diaphragm','The pelvic diaphragm is the muscular floor of pelvis. It is funnel-shaped and supports pelvic viscera while allowing passage of urethra, vagina and anal canal.','It consists of <b>levator ani</b> and <b>coccygeus</b>. Levator ani includes puborectalis, pubococcygeus and iliococcygeus. It arises from body of pubis, tendinous arch of obturator fascia and ischial spine, and inserts into perineal body, walls of viscera, anococcygeal body and coccyx. Coccygeus extends from ischial spine to sacrum/coccyx. Nerve supply is mainly S3-S4 with pudendal contribution.','Levator ani + coccygeus → pelvic diaphragm → support pelvic viscera + maintain continence','diaphragm','<b>Applied anatomy:</b> puborectalis maintains anorectal angle and continence. Weakness after obstetric injury may contribute to prolapse, urinary stress incontinence and faecal incontinence.'), ('30. Broad ligament of uterus','The broad ligament is a double layer of peritoneum extending from the lateral side of uterus to lateral pelvic wall. It acts as a mesentery, not as a major uterine support.','Its parts are <b>mesometrium</b>, the largest inferior portion; <b>mesosalpinx</b>, around uterine tube; and <b>mesovarium</b>, a short fold attaching ovary. Contents include uterine tube, round ligament, ovarian ligament, uterine and ovarian vessels, nerves, lymphatics and loose connective tissue. Ureter passes beneath uterine artery at its base.','Peritoneal fold from uterus → mesometrium + mesosalpinx + mesovarium → vessels/ligaments/tube within fold','uterus','<b>Applied anatomy:</b> uterine artery ligation during hysterectomy risks ureteric injury. Broad-ligament haematoma may follow pelvic surgery or childbirth.'), ('35. Anal canal','The anal canal is a 4 cm terminal part of large intestine. Its pectinate line divides two clinically distinct territories.','<b>Above pectinate line:</b> endodermal origin, columnar epithelium, superior rectal vessels, internal iliac nodes, visceral autonomic innervation and little pain. <b>Below:</b> ectodermal origin, stratified squamous epithelium, inferior rectal vessels, superficial inguinal nodes and somatic pudendal innervation. Internal sphincter is smooth muscle; external sphincter is skeletal muscle.','Upper anal canal: visceral territory → pectinate line → lower anal canal: somatic territory','anal','<b>Applied anatomy:</b> internal haemorrhoids are usually painless, while external haemorrhoids are painful. The pectinate line predicts lymphatic spread of anal carcinoma.'), ('17. Microanatomy of prostate','The prostate is a compound tubuloalveolar gland embedded in dense fibromuscular stroma. Its secretion contributes to seminal fluid.','Numerous branched glands are lined by simple to pseudostratified columnar epithelium with basal cells. Lumina often contain corpora amylacea. Smooth muscle and fibroelastic stroma contract during ejaculation. Anatomical zones are peripheral, central and transition zones.','Tubuloalveolar glands + fibromuscular stroma → prostatic secretion → ejaculation into urethra','prostate','<b>Applied anatomy:</b> benign prostatic hyperplasia typically affects transition zone and may obstruct urethra. Carcinoma commonly begins in peripheral zone, accessible on digital rectal examination.'), ('44. Superficial perineal pouch','This is a potential space in the urogenital triangle between Colles fascia inferiorly and perineal membrane superiorly. It is closed laterally by ischiopubic rami.','<b>Male contents:</b> root of penis, bulb and crura, bulbospongiosus, ischiocavernosus, superficial transverse perineal muscles, proximal spongy urethra and internal pudendal branches. <b>Female contents:</b> crura and clitoris, bulbs of vestibule, bulbospongiosus, ischiocavernosus, superficial transverse perineal muscles and greater vestibular glands.','Perineal membrane + Colles fascia → superficial pouch → erectile structures and superficial muscles','pouch','<b>Applied anatomy:</b> rupture of spongy urethra allows urine into pouch, scrotum, penis and lower anterior abdominal wall. It does not enter thigh because Colles fascia attaches to fascia lata.'), ('46. Ischioanal fossa','The ischioanal fossa is a wedge-shaped fat-filled space on either side of anal canal. It permits expansion of anal canal during defecation.','<b>Boundaries:</b> lateral obturator internus and fascia; medial external anal sphincter and levator ani; posterior sacrotuberous ligament and gluteus maximus; anterior perineal membrane. Base is skin; apex is at meeting of obturator fascia and inferior fascia of pelvic diaphragm. Pudendal canal in lateral wall contains pudendal nerve and internal pudendal vessels.','Fat-filled space beside anal canal → pudendal canal in lateral wall → permits anal expansion','fossa','<b>Applied anatomy:</b> ischioanal abscess may spread through deep postanal space to opposite fossa, producing horseshoe abscess. Pudendal nerve block is given near ischial spine.'), ('57. Deep perineal pouch','The deep perineal pouch is a thin space immediately superior to perineal membrane and inferior to inferior fascia of pelvic diaphragm.','<b>Male contents:</b> membranous urethra, external urethral sphincter, deep transverse perineal muscles, bulbourethral glands and dorsal neurovascular structures of penis. <b>Female contents:</b> urethra, part of vagina, external urethral sphincter complex, deep transverse perineal muscles and dorsal neurovascular structures of clitoris.','Pelvic diaphragm fascia → deep pouch → perineal membrane → superficial pouch','pouch','<b>Applied anatomy:</b> rupture of membranous urethra can cause urine to collect in deep pouch and extraperitoneal pelvis. It differs from spongy urethral rupture, which spreads into superficial pouch.')] ''' s=s[:start]+items+s[end:] # replace diagram function exact by locate start=s.index('def diag(k):'); end=s.index('\n\nitems=[',start) diag='''def diag(k): d=Drawing(420,110);ink=colors.HexColor('#174b68');blue=colors.HexColor('#368ead');pale=colors.HexColor('#dceef3');red=colors.HexColor('#bd4a45') def L(x,y,t,f=7,c=ink): d.add(String(x,y,t,fontSize=f,fillColor=c)) if k=='uterus': d.add(Polygon([150,84,260,84,285,50,250,18,160,18,125,50],fillColor=pale,strokeColor=ink));d.add(Line(150,82,105,100,strokeColor=blue,strokeWidth=3));d.add(Line(260,82,305,100,strokeColor=blue,strokeWidth=3));d.add(Line(205,18,205,4,strokeColor=ink,strokeWidth=6));L(173,48,'Uterus',9);L(72,97,'Uterine tube',7,blue);L(304,97,'Uterine tube',7,blue);L(215,6,'Vagina',8);L(275,41,'Cardinal lig.',7,red);d.add(Line(255,45,333,45,strokeColor=red)) elif k=='perineal': d.add(Circle(210,53,12,fillColor=red,strokeColor=ink));L(180,35,'Perineal body',8,red) for x,y,t in [(55,85,'Bulbospongiosus'),(55,15,'External anal sphincter'),(280,85,'Superficial transverse'),(280,15,'Levator ani')]:d.add(Line(205,53,x+30,y,strokeColor=blue));L(x,y,t,7,blue) elif k=='inguinal': d.add(Line(80,25,330,25,strokeColor=red,strokeWidth=3));L(160,11,'Inguinal ligament',8,red);d.add(Polygon([120,30,290,30,270,82,140,82],fillColor=pale,strokeColor=ink));L(145,55,'Inguinal canal',10);L(98,88,'Deep ring',7);L(267,88,'Superficial ring',7);d.add(Line(110,80,140,72,strokeColor=blue));d.add(Line(280,80,270,72,strokeColor=blue)) elif k=='diaphragm': d.add(Polygon([90,30,130,86,205,98,280,86,320,30],fillColor=pale,strokeColor=ink));L(169,75,'Levator ani',9);L(175,20,'Coccygeus',8);d.add(Line(205,70,205,35,strokeColor=red,strokeWidth=3));L(212,45,'Urogenital hiatus',7,red);L(120,101,'Pubis',7);L(280,101,'Coccyx',7) elif k=='anal': d.add(Rect(175,15,64,84,fillColor=pale,strokeColor=ink));d.add(Line(175,60,239,60,strokeColor=red,strokeWidth=3));L(246,57,'Pectinate line',8,red);L(65,77,'Upper: visceral',8);L(65,27,'Lower: somatic',8);d.add(Line(150,80,175,80,strokeColor=ink));d.add(Line(150,30,175,30,strokeColor=ink)) elif k=='prostate': d.add(Circle(205,56,38,fillColor=pale,strokeColor=ink));d.add(Circle(205,56,18,fillColor=colors.white,strokeColor=blue));L(180,52,'Urethra',7,blue);L(115,90,'Peripheral zone',8);L(230,90,'Transition zone',8);d.add(Line(145,80,174,67,strokeColor=red));d.add(Line(274,80,223,67,strokeColor=red)) elif k=='pouch': d.add(Line(80,25,340,25,strokeColor=blue,strokeWidth=4));L(85,11,'Pelvic diaphragm fascia',7,blue);d.add(Line(80,83,340,83,strokeColor=red,strokeWidth=4));L(150,90,'Perineal membrane',8,red);d.add(Line(80,105,340,105,strokeColor=ink,strokeWidth=4));L(155,106,'Colles fascia',7);L(168,54,'Deep pouch',9);L(155,97,'Superficial pouch',8) elif k=='fossa': d.add(Polygon([105,18,315,18,260,98,160,98],fillColor=pale,strokeColor=ink));L(157,7,'Levator ani (medial)',7);L(256,50,'Obturator internus',7);L(165,63,'Fat pad',9);d.add(Line(110,45,170,65,strokeColor=red,strokeWidth=2));L(28,39,'Pudendal canal',8,red) return d ''' s=s[:start]+diag+s[end:] s=s.replace("Paragraph('ABDOMEN AND GASTROINTESTINAL ANATOMY',s['Title2'])","Paragraph('PELVIS AND PERINEUM ANATOMY',s['Title2'])").replace("Paragraph('University-style short answers with flowcharts and applied anatomy',s['Title2'])","Paragraph('University-style short answers with flowcharts and applied anatomy',s['Title2'])",1).replace("'Abdomen and GI university short answers | diagrams are simplified revision schematics'","'Pelvis and perineum university short answers | diagrams are simplified revision schematics'").replace("title='Abdomen and GI University Short Answers'","title='Pelvis and Perineum University Short Answers'") # replace final rapid content manually broad no effect requirements perhaps old include abdomen. old="['Portal vein','Hepatic segments','Blood supply of stomach','Meckel diverticulum','Relations of right kidney','Lymphatic drainage of stomach','Microanatomy of stomach','Foregut and midgut derivatives','Lesser sac and epiploic foramen','Vermiform appendix','Histology of pancreas','Anal canal','Coeliac trunk','Rectus sheath','Microanatomy of liver','Root of mesentery']" new="['Supports of uterus','Perineal body','Inguinal canal','Muscles of pelvic diaphragm','Broad ligament of uterus','Anal canal','Microanatomy of prostate','Superficial perineal pouch','Ischioanal fossa','Deep perineal pouch']" s=s.replace(old,new) open(p,'w').write(s) PY python "/tmp/workspace/pelvis-perineum-university-notes/src/build.py"

python - <<'PY' from pypdf import PdfReader p='/tmp/workspace/pelvis-perineum-university-notes/output/Pelvis_and_Perineum_University_Short_Answers.pdf' t='\n'.join(x.extract_text() or '' for x in PdfReader(p).pages) for x in ['Supports of uterus','Perineal body','Inguinal canal','Muscles of pelvic diaphragm','Broad ligament of uterus','Anal canal','Microanatomy of prostate','Superficial perineal pouch','Ischioanal fossa','Deep perineal pouch']: print(x,x in t) print(t[-1800:]) PY

~/pelvis-perineum-university-notes/src/build.py

python "/tmp/workspace/pelvis-perineum-university-notes/src/build.py" && python - <<'PY' from pypdf import PdfReader from os.path import getsize p='/tmp/workspace/pelvis-perineum-university-notes/output/Pelvis_and_Perineum_University_Short_Answers.pdf' r=PdfReader(p); t='\n'.join(x.extract_text() or '' for x in r.pages) required=['Supports of uterus','Perineal body','Inguinal canal','Muscles of pelvic diaphragm','Broad ligament of uterus','Anal canal','Microanatomy of prostate','Superficial perineal pouch','Ischioanal fossa','Deep perineal pouch'] print('PDF_OK',{'pages':len(r.pages),'bytes':getsize(p),'encrypted':r.is_encrypted,'missing':[x for x in required if x not in t]}) PY

Which module should I expand into full university-style short notes next?

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NCBI Bookshelf embryology descent testis pancreas kidney gastrulation placental barrier diaphragm

mkdir -p "/tmp/workspace/embryology-university-notes/src" "/tmp/workspace/embryology-university-notes/output" && cat > "/tmp/workspace/embryology-university-notes/src/build.py" <<'PY' from reportlab.lib.pagesizes import A4 from reportlab.platypus import SimpleDocTemplate,Paragraph,Spacer,PageBreak from reportlab.lib.styles import getSampleStyleSheet,ParagraphStyle from reportlab.lib import colors from reportlab.lib.units import cm from reportlab.lib.enums import TA_CENTER from reportlab.graphics.shapes import Drawing,Rect,Line,String,Circle,Polygon from pypdf import PdfReader import os OUT='/tmp/workspace/embryology-university-notes/output/Embryology_University_Short_Answers.pdf' s=getSampleStyleSheet();s.add(ParagraphStyle(name='T',parent=s['Title'],fontSize=22,leading=27,textColor=colors.HexColor('#123d57'),alignment=TA_CENTER,spaceAfter=10));s.add(ParagraphStyle(name='H',parent=s['Heading2'],fontSize=12.5,leading=15.5,textColor=colors.HexColor('#123d57'),spaceBefore=9,spaceAfter=4,keepWithNext=True));s.add(ParagraphStyle(name='B',parent=s['BodyText'],fontSize=8.5,leading=11,spaceAfter=4));s.add(ParagraphStyle(name='F',parent=s['BodyText'],fontSize=8.3,leading=10.5,alignment=TA_CENTER,textColor=colors.HexColor('#123d57'),backColor=colors.HexColor('#e5f2f6'),borderColor=colors.HexColor('#78a9ba'),borderWidth=.5,borderPadding=5,spaceAfter=5));s.add(ParagraphStyle(name='A',parent=s['BodyText'],fontSize=8.2,leading=10.5,textColor=colors.HexColor('#6a3415'),backColor=colors.HexColor('#fff1da'),borderPadding=5,spaceAfter=5));s.add(ParagraphStyle(name='N',parent=s['BodyText'],fontSize=7.1,leading=8.5,textColor=colors.HexColor('#4f6570'),alignment=TA_CENTER)) def diag(k): d=Drawing(420,105);ink=colors.HexColor('#174b68');blue=colors.HexColor('#368ead');pale=colors.HexColor('#dceef3');red=colors.HexColor('#bd4a45') def L(x,y,t,f=7,c=ink):d.add(String(x,y,t,fontSize=f,fillColor=c)) if k=='testis': d.add(Circle(190,82,13,fillColor=pale,strokeColor=ink));L(205,80,'Testis',8);d.add(Line(190,69,220,43,strokeColor=red,strokeWidth=3));d.add(Line(220,43,225,16,strokeColor=red,strokeWidth=3));L(230,44,'Inguinal canal',7);L(230,12,'Scrotum',8);L(110,58,'Gubernaculum',8,blue);d.add(Line(120,55,180,72,strokeColor=blue)) elif k=='ducts': d.add(Line(105,86,205,55,strokeColor=blue,strokeWidth=4));d.add(Line(305,86,205,55,strokeColor=red,strokeWidth=4));L(50,85,'Dorsal bud/duct',8,blue);L(285,85,'Ventral bud/duct',8,red);d.add(Line(205,55,205,15,strokeColor=ink,strokeWidth=5));L(214,27,'Main pancreatic duct',8);L(168,5,'Fusion after rotation',8) elif k=='kidney': d.add(Rect(75,25,90,48,fillColor=pale,strokeColor=ink));L(82,45,'Metanephric',8);L(89,34,'blastema',8);d.add(Line(300,50,165,50,strokeColor=red,strokeWidth=4));L(286,58,'Ureteric bud',8,red);d.add(Line(165,50,235,20,strokeColor=blue,strokeWidth=3));d.add(Line(165,50,235,82,strokeColor=blue,strokeWidth=3));L(240,17,'Collecting',7,blue);L(240,80,'system',7,blue) elif k=='heart': d.add(Circle(210,55,42,fillColor=pale,strokeColor=ink));d.add(Line(207,92,207,20,strokeColor=blue,strokeWidth=4));L(177,11,'Septum primum',8,blue);d.add(Line(223,92,223,30,strokeColor=red,strokeWidth=4));L(230,23,'Septum secundum',8,red);L(228,58,'Foramen ovale',7) elif k=='gastrula': d.add(Rect(90,20,240,20,fillColor=colors.HexColor('#f7d8d6'),strokeColor=ink));L(165,25,'Epiblast',8);d.add(Rect(90,42,240,20,fillColor=colors.HexColor('#f7edcb'),strokeColor=ink));L(162,47,'Mesoderm',8);d.add(Rect(90,64,240,20,fillColor=pale,strokeColor=ink));L(166,69,'Endoderm',8);d.add(Line(210,15,210,90,strokeColor=red,strokeWidth=3));L(216,88,'Primitive streak',7,red) elif k=='placenta': for x,c,t in [(70,colors.HexColor('#f7d8d6'),'Maternal blood'),(176,colors.HexColor('#f7edcb'),'Trophoblast'),(282,pale,'Fetal capillary')]:d.add(Rect(x,32,90,40,fillColor=c,strokeColor=ink));L(x+10,48,t,8) d.add(Line(160,52,176,52,strokeColor=red));d.add(Line(266,52,282,52,strokeColor=blue));L(120,12,'Placental barrier',9) elif k=='diaphragm': d.add(Polygon([70,25,120,76,205,92,290,76,340,25],fillColor=pale,strokeColor=ink));L(160,68,'Septum transversum',8);L(80,10,'Body wall muscle',7);L(260,10,'Pleuroperitoneal',7);L(268,0,'membranes',7);L(175,30,'Dorsal mesentery',7,red) return d items=[ ('4. Descent of testis and applied anatomy','Testes develop high on posterior abdominal wall near T10 and descend to scrotum before birth. Gubernaculum guides descent and processus vaginalis precedes the testis.','Testis reaches deep inguinal ring near 7th month, traverses inguinal canal during 7th month and reaches scrotum by about 8th month. Cranial suspensory ligament regresses and gubernaculum enlarges. Testicular vessels remain long, explaining high lumbar lymphatic drainage. Proximal processus vaginalis normally obliterates; distal part forms tunica vaginalis.','Posterior abdominal wall → deep ring → inguinal canal → superficial ring → scrotum','testis','<b>Applied anatomy:</b> cryptorchidism is associated with infertility and increased malignancy risk. Patent processus vaginalis causes congenital indirect inguinal hernia or communicating hydrocele.'), ('13. Development of uterus','The uterus develops from the paired paramesonephric or Mullerian ducts.','Cranial unfused parts become uterine tubes. Caudal parts fuse in midline to form uterovaginal primordium, producing uterus and upper vagina. The intervening septum is absorbed, creating one uterine cavity. Endometrium develops from duct epithelium; myometrium and perimetrium from surrounding mesenchyme.','Paired Mullerian ducts → caudal fusion → uterovaginal primordium → septal resorption → uterus and upper vagina','ducts','<b>Applied anatomy:</b> failure of fusion causes bicornuate uterus or uterus didelphys. Failure of septal resorption gives septate uterus and may be associated with recurrent pregnancy loss.'), ('14. Development of pancreas and congenital anomalies','Pancreas develops from dorsal and ventral endodermal buds from caudal foregut.','The ventral bud rotates posteriorly with bile duct around duodenum and fuses with dorsal bud. Ventral bud forms uncinate process and inferior part of head. Dorsal bud forms superior head, body and tail. Main pancreatic duct derives from ventral duct plus distal dorsal duct; accessory duct may persist from proximal dorsal duct.','Foregut endoderm → dorsal + ventral buds → ventral rotation → fusion → pancreas and ducts','ducts','<b>Applied anatomy:</b> pancreas divisum results from failed duct fusion and can predispose to pancreatitis. Annular pancreas from bifid ventral bud may obstruct duodenum.'), ('24 and 41. Development of kidney and urinary system','The urinary system develops mainly from intermediate mesoderm. Three nephric systems appear successively.','Pronephros is rudimentary; mesonephros functions transiently; metanephros is permanent kidney from week 5. Ureteric bud forms ureter, renal pelvis, major/minor calyces and collecting ducts. Metanephric blastema forms nephrons from Bowman capsule to distal convoluted tubule. Kidneys ascend from pelvis to lumbar region and rotate medially. Bladder develops from vesical part of urogenital sinus; trigone forms by incorporation of mesonephric ducts.','Intermediate mesoderm → pronephros → mesonephros → metanephros; ureteric bud + blastema → permanent kidney','kidney','<b>Applied anatomy:</b> failure of ascent causes pelvic kidney. Horseshoe kidney is usually trapped below inferior mesenteric artery. Persistent urachus can cause umbilical urine discharge or urachal cyst.'), ('42. Development of interatrial septum','Interatrial septation forms a fetal right-to-left shunt that normally closes after birth.','Septum primum grows toward endocardial cushions leaving ostium primum. Before this closes, perforations in its upper part coalesce as ostium secundum. Septum secundum grows on right side, leaving foramen ovale. Septum primum acts as valve. At birth, increased left atrial pressure causes functional then anatomical closure in most individuals.','Septum primum → ostium primum → ostium secundum → septum secundum → foramen ovale → postnatal closure','heart','<b>Applied anatomy:</b> ostium secundum ASD is common. Patent foramen ovale can permit paradoxical embolism if right atrial pressure rises.'), ('49. Development of thoraco-abdominal diaphragm','The diaphragm develops from four embryological components and descends from cervical region, retaining phrenic nerve supply C3-C5.','Septum transversum forms central tendon. Pleuroperitoneal membranes form posterolateral parts. Dorsal mesentery of oesophagus forms crura. Muscular ingrowth from lateral body walls forms peripheral muscle. Pleuroperitoneal canals normally close by week 7.','Septum transversum + pleuroperitoneal membranes + dorsal mesentery + body-wall muscle → diaphragm','diaphragm','<b>Applied anatomy:</b> failure of pleuroperitoneal membrane closure causes posterolateral congenital diaphragmatic hernia, commonly left-sided, leading to pulmonary hypoplasia.'), ('51. Gastrulation','Gastrulation in week 3 converts the bilaminar embryonic disc into a trilaminar disc and establishes body axes.','Primitive streak develops in epiblast. Ingressing epiblast cells first displace hypoblast to form definitive endoderm; next cells form intraembryonic mesoderm; remaining epiblast becomes ectoderm. Notochordal process establishes axial organization and induces neural plate.','Epiblast → primitive streak → definitive endoderm → mesoderm → ectoderm → trilaminar disc','gastrula','<b>Applied anatomy:</b> persistence of primitive streak may produce sacrococcygeal teratoma. Abnormal cell migration can cause laterality defects.'), ('52. Placental barrier','The placental barrier separates maternal blood in intervillous spaces from fetal capillary blood, without normally allowing direct mixing.','Early barrier comprises syncytiotrophoblast, cytotrophoblast, villous connective tissue and fetal capillary endothelium. Later, cytotrophoblast becomes discontinuous and barrier thins. It permits exchange of gases, nutrients, waste, IgG and some drugs but does not block all infections or teratogens.','Maternal intervillous blood → trophoblast layers → villous stroma → fetal capillary → fetal circulation','placenta','<b>Applied anatomy:</b> maternal and fetal blood group differences are possible because blood does not normally mix. Fetal RBC entry can sensitize Rh-negative mother; anti-D immunoglobulin prevents Rh haemolytic disease where indicated.'), ('Fetal circulation','Fetal circulation is adapted to oxygenation at placenta and uses three shunts: ductus venosus, foramen ovale and ductus arteriosus.','Oxygenated blood enters via umbilical vein, mostly bypasses liver through ductus venosus to IVC, enters right atrium and is directed through foramen ovale to left atrium, left ventricle and ascending aorta. Right ventricular output passes through pulmonary trunk and largely ductus arteriosus to descending aorta. Umbilical arteries return blood to placenta.','Placenta → umbilical vein → ductus venosus → IVC → RA → foramen ovale/ductus arteriosus → aorta → umbilical arteries → placenta','heart','<b>Applied anatomy:</b> after birth, foramen ovale, ductus arteriosus and ductus venosus normally close. Persistent ductus arteriosus causes a continuous murmur and may require closure.'),] def footer(c,doc): c.saveState();c.setStrokeColor(colors.HexColor('#9ec3d0'));c.line(1.3*cm,1.1*cm,19.7*cm,1.1*cm);c.setFont('Helvetica',7);c.setFillColor(colors.HexColor('#486875'));c.drawString(1.3*cm,.72*cm,'Embryology university short answers | diagrams are simplified revision schematics');c.drawRightString(19.7*cm,.72*cm,f'Page {doc.page}');c.restoreState() story=[Spacer(1,1.7*cm),Paragraph('EMBRYOLOGY',s['T']),Paragraph('University-style short answers with flowcharts and applied anatomy',s['T']),Paragraph('Exam method: state source, sequence of development, adult derivatives, then two congenital anomalies. Draw the sequence diagram in a clean, labelled form.',s['B']),Spacer(1,6),Paragraph('<b>Included from your PYQ list:</b> descent of testis, uterus, pancreas, kidney/urinary system, interatrial septum, thoraco-abdominal diaphragm, gastrulation, placental barrier and fetal circulation.',s['F']),PageBreak()] for title,intro,pts,flow,k,app in items: story += [Paragraph(title,s['H']),Paragraph('<b>Introduction:</b> '+intro,s['B']),Paragraph(pts,s['B']),Paragraph('<b>Flowchart</b><br/>'+flow,s['F']),diag(k),Paragraph('Labelled revision schematic: draw a larger version in the answer book.',s['N']),Paragraph('<b>Applied anatomy:</b> '+app,s['A']),Spacer(1,4)] story += [PageBreak(),Paragraph('Rapid final revision',s['H'])] for x in ['Testis: processus vaginalis precedes descent; non-obliteration causes indirect hernia.','Uterus: fused Müllerian ducts form uterus; septal resorption forms single cavity.','Pancreas: ventral bud forms uncinate process and inferior head.','Kidney: ureteric bud makes collecting system; metanephric blastema makes nephrons.','Atrial septum: septum primum is valve of foramen ovale.','Diaphragm: four components, phrenic nerve C3-C5.','Gastrulation is week 3 and produces three germ layers.','Placental barrier separates, but does not fully isolate, maternal and fetal circulations.']: story.append(Paragraph('• '+x,s['B'])) story += [Spacer(1,7),Paragraph('Reference base',s['H']),Paragraph('The Developing Human: Clinically Oriented Embryology; Langman’s Medical Embryology; Gray’s Anatomy for Students; Histology: A Text and Atlas. This PDF is an exam-revision aid.',s['B'])] doc=SimpleDocTemplate(OUT,pagesize=A4,leftMargin=1.3*cm,rightMargin=1.3*cm,topMargin=1.22*cm,bottomMargin=1.48*cm,title='Embryology University Short Answers');doc.build(story,onFirstPage=footer,onLaterPages=footer) r=PdfReader(OUT);t=''.join(x.extract_text() or '' for x in r.pages);req=['Descent of testis','Development of uterus','Development of pancreas','Development of kidney','Development of interatrial septum','Development of thoraco-abdominal diaphragm','Gastrulation','Placental barrier','Fetal circulation'];print('PDF',len(r.pages),os.path.getsize(OUT),[x for x in req if x not in t]) PY python "/tmp/workspace/embryology-university-notes/src/build.py"

python - <<'PY' from pypdf import PdfReader from os.path import getsize p='/tmp/workspace/embryology-university-notes/output/Embryology_University_Short_Answers.pdf' r=PdfReader(p);t='\n'.join(pg.extract_text() or '' for pg in r.pages) required=['Descent of testis','Development of uterus','Development of pancreas','Development of kidney','Development of interatrial septum','Development of thoraco-abdominal diaphragm','Gastrulation','Placental barrier','Fetal circulation'] print({'exists':getsize(p)>0,'pages':len(r.pages),'encrypted':r.is_encrypted,'missing':[x for x in required if x not in t],'bytes':getsize(p)}) PY

Which module should I prepare or expand next?

Which section should I turn into detailed university-style short notes with labelled diagrams, flowcharts, and applied anatomy next?

Which module should I prepare in full detail first, with university-style short answers, labelled diagrams, flowcharts, and applied anatomy?

histology labelled diagram duodenum Brunner glands pancreas liver suprarenal retina diaphragm openings

NCBI Bookshelf histology duodenum pancreas liver suprarenal retina diaphragm openings anatomy

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mkdir -p "/tmp/workspace/histology-thorax-university-notes/src" "/tmp/workspace/histology-thorax-university-notes/output" "/tmp/workspace/complete-anatomy-university-revision/output" && cat > "/tmp/workspace/histology-thorax-university-notes/src/build.py" <<'PY' from reportlab.lib.pagesizes import A4 from reportlab.platypus import SimpleDocTemplate, Paragraph, Spacer, PageBreak from reportlab.lib.styles import getSampleStyleSheet, ParagraphStyle from reportlab.lib import colors from reportlab.lib.units import cm from reportlab.lib.enums import TA_CENTER from reportlab.graphics.shapes import Drawing, Rect, Line, String, Circle, Polygon from pypdf import PdfReader import os OUT='/tmp/workspace/histology-thorax-university-notes/output/Histology_and_Thorax_University_Short_Answers.pdf' s=getSampleStyleSheet() s.add(ParagraphStyle(name='T',parent=s['Title'],fontSize=22,leading=27,textColor=colors.HexColor('#123d57'),alignment=TA_CENTER,spaceAfter=10)) s.add(ParagraphStyle(name='H',parent=s['Heading2'],fontSize=12.5,leading=15.5,textColor=colors.HexColor('#123d57'),spaceBefore=9,spaceAfter=4,keepWithNext=True)) s.add(ParagraphStyle(name='B',parent=s['BodyText'],fontSize=8.5,leading=11,spaceAfter=4)) s.add(ParagraphStyle(name='F',parent=s['BodyText'],fontSize=8.3,leading=10.5,alignment=TA_CENTER,textColor=colors.HexColor('#123d57'),backColor=colors.HexColor('#e5f2f6'),borderColor=colors.HexColor('#78a9ba'),borderWidth=.5,borderPadding=5,spaceAfter=5)) s.add(ParagraphStyle(name='A',parent=s['BodyText'],fontSize=8.2,leading=10.5,textColor=colors.HexColor('#6a3415'),backColor=colors.HexColor('#fff1da'),borderPadding=5,spaceAfter=5)) s.add(ParagraphStyle(name='N',parent=s['BodyText'],fontSize=7.1,leading=8.5,textColor=colors.HexColor('#4f6570'),alignment=TA_CENTER)) def diag(k): d=Drawing(420,108); ink=colors.HexColor('#174b68'); blue=colors.HexColor('#368ead'); pale=colors.HexColor('#dceef3'); red=colors.HexColor('#bd4a45') def L(x,y,t,f=7,c=ink):d.add(String(x,y,t,fontSize=f,fillColor=c)) if k=='duodenum': layers=[('Mucosa',colors.HexColor('#f7d8d6')),('Submucosa: Brunner glands',colors.HexColor('#f7edcb')),('Muscularis externa',pale),('Serosa/adventitia',colors.HexColor('#e4e9ea'))] for i,(t,c) in enumerate(layers):d.add(Rect(85,16+i*21,250,18,fillColor=c,strokeColor=ink));L(150,21+i*21,t,8) L(92,97,'Villi and crypts',7,red) elif k=='adrenal': bands=[('Capsule',colors.HexColor('#e4e9ea')),('Zona glomerulosa',colors.HexColor('#f7d8d6')),('Zona fasciculata',colors.HexColor('#f7edcb')),('Zona reticularis',pale),('Medulla',colors.HexColor('#f3d7ef'))] for i,(t,c) in enumerate(bands):d.add(Rect(90,15+i*17,230,14,fillColor=c,strokeColor=ink));L(165,18+i*17,t,7) L(16,92,'GFR: salt, sugar, sex',8,red) elif k=='retina': names=['Pigment epithelium','Rods/cones','Outer nuclear','Outer plexiform','Inner nuclear','Inner plexiform','Ganglion cells','Nerve fibres'] for i,t in enumerate(names):d.add(Rect(72,11+i*11,275,9,fillColor=[pale,colors.HexColor('#f7d8d6'),colors.HexColor('#f7edcb')][i%3],strokeColor=ink));L(165,13+i*11,t,6.5) L(355,73,'Vitreous side',7);L(355,10,'Choroid side',7) elif k=='diaphragm': d.add(Polygon([70,22,120,75,205,92,290,75,340,22],fillColor=pale,strokeColor=ink));d.add(Circle(160,62,7,fillColor=colors.white,strokeColor=red));d.add(Circle(205,54,7,fillColor=colors.white,strokeColor=blue));d.add(Circle(255,62,7,fillColor=colors.white,strokeColor=ink));L(118,99,'T8: caval opening',7,red);L(176,99,'T10: oesophageal',7,blue);L(249,99,'T12: aortic',7) return d items=[ ('26. Histology of duodenum','The duodenum has the usual four layers of gastrointestinal wall and is recognized histologically by Brunner glands in the submucosa.','<b>Mucosa:</b> simple columnar epithelium, villi and crypts of Lieberkuhn. It includes absorptive enterocytes, goblet cells, Paneth cells, enteroendocrine cells and stem cells. <b>Submucosa:</b> Brunner glands secrete alkaline mucus to neutralize gastric acid. <b>Muscularis externa:</b> inner circular and outer longitudinal smooth muscle. <b>Outer coat:</b> first part has serosa; remainder mainly adventitia.','Acidic gastric chyme → Brunner alkaline mucus → neutral pH → pancreatic/biliary digestion → absorption','duodenum','<b>Applied anatomy:</b> Brunner glands distinguish duodenum from jejunum and ileum. Duodenal ulcers are common in the first part; posterior ulcers may erode gastroduodenal artery.'), ('48. Microanatomy of suprarenal gland','The suprarenal gland is enclosed in a capsule and consists of cortex and medulla.','The cortex has three zones: <b>zona glomerulosa</b>, cells in rounded clusters producing mineralocorticoids; <b>zona fasciculata</b>, pale lipid-rich spongiocytes in straight cords producing glucocorticoids; <b>zona reticularis</b>, anastomosing cords producing androgens. The medulla contains chromaffin cells, modified sympathetic postganglionic neurons, which produce catecholamines. Cortical blood reaches medulla, exposing it to high glucocorticoid concentration.','Capsule → glomerulosa → fasciculata → reticularis → medulla; GFR = salt, sugar, sex','adrenal','<b>Applied anatomy:</b> pheochromocytoma arises from chromaffin cells. Adrenal cortical insufficiency impairs mineralocorticoid and glucocorticoid production.'), ('54. Layers of retina','The retina has ten layers, arranged from outer choroidal side to inner vitreous side. Light passes inward to photoreceptors; neural signals pass back toward ganglion cells.','Order: 1 retinal pigment epithelium, 2 rods and cones, 3 external limiting membrane, 4 outer nuclear layer, 5 outer plexiform layer, 6 inner nuclear layer, 7 inner plexiform layer, 8 ganglion cell layer, 9 nerve fibre layer, 10 internal limiting membrane. Rods mediate dim-light vision; cones mediate colour and sharp vision. Ganglion cell axons form optic nerve.','Light: vitreous → photoreceptors; signal: photoreceptors → bipolar cells → ganglion cells → optic nerve','retina','<b>Applied anatomy:</b> fovea centralis has maximal cone density and visual acuity. Retinal detachment separates neurosensory retina from pigment epithelium and threatens vision.'), ('45. Major diaphragmatic openings','The diaphragm has three major openings, classically at T8, T10 and T12.','<b>T8 caval opening</b> in central tendon transmits IVC, terminal right phrenic nerve and hepatic lymphatics. <b>T10 oesophageal hiatus</b> in right crus transmits oesophagus, anterior/posterior vagal trunks, oesophageal vessels and lymphatics. <b>T12 aortic hiatus</b> behind median arcuate ligament transmits aorta, thoracic duct and azygos system. Mnemonic: I 8 10 Eggs At 12.','T8 IVC → T10 oesophagus + vagus → T12 aorta + thoracic duct','diaphragm','<b>Applied anatomy:</b> hiatus hernia commonly occurs through oesophageal hiatus. Caval opening widens during inspiration, aiding venous return; aortic hiatus does not.'), ('55. Thoraco-abdominal diaphragm','The diaphragm is a dome-shaped musculotendinous partition between thorax and abdomen and the principal muscle of inspiration.','<b>Origins:</b> sternal part from xiphoid; costal part from inner surfaces of lower six ribs/costal cartilages; lumbar part from right and left crura plus arcuate ligaments. Fibres insert into central tendon. <b>Nerve supply:</b> motor by phrenic nerve C3-C5; sensory centrally by phrenic and peripherally by lower intercostals. On contraction it descends, increasing thoracic vertical diameter.','Phrenic nerve C3-C5 → diaphragm contraction → descent of domes → thoracic volume increases → inspiration','diaphragm','<b>Applied anatomy:</b> phrenic nerve irritation causes referred shoulder pain. Unilateral paralysis produces elevated hemidiaphragm and paradoxical movement on inspiration.'),] def footer(c,doc): c.saveState();c.setStrokeColor(colors.HexColor('#9ec3d0'));c.line(1.3*cm,1.1*cm,19.7*cm,1.1*cm);c.setFont('Helvetica',7);c.setFillColor(colors.HexColor('#486875'));c.drawString(1.3*cm,.72*cm,'Histology and thorax university short answers | diagrams are simplified revision schematics');c.drawRightString(19.7*cm,.72*cm,f'Page {doc.page}');c.restoreState() story=[Spacer(1,1.7*cm),Paragraph('HISTOLOGY AND THORAX',s['T']),Paragraph('University-style short answers with flowcharts and applied anatomy',s['T']),Paragraph('For histology answers: write lining, glands/cells, wall layers, identifying feature and one applied point. For diaphragm: include origin, insertion, nerve supply, actions and openings.',s['B']),Spacer(1,6),Paragraph('<b>Topics from your PYQ list:</b> duodenum, suprarenal gland, retina, major diaphragmatic openings, and thoraco-abdominal diaphragm.',s['F']),PageBreak()] for title,intro,pts,flow,k,app in items:story += [Paragraph(title,s['H']),Paragraph('<b>Introduction:</b> '+intro,s['B']),Paragraph(pts,s['B']),Paragraph('<b>Flowchart</b><br/>'+flow,s['F']),diag(k),Paragraph('Labelled revision schematic: draw larger and label with straight leader lines in the answer book.',s['N']),Paragraph('<b>Applied anatomy:</b> '+app,s['A']),Spacer(1,4)] story += [PageBreak(),Paragraph('Rapid final revision',s['H'])] for x in ['Duodenum: Brunner glands in submucosa are the key identifying feature.','Suprarenal cortex GFR: glomerulosa-salt, fasciculata-sugar, reticularis-sex.','Retina: light travels to photoreceptors; signals reach ganglion cells and then optic nerve.','Openings: T8 IVC, T10 oesophagus, T12 aorta.','Diaphragm motor nerve: phrenic C3-C5.'] :story.append(Paragraph('• '+x,s['B'])) story += [Spacer(1,7),Paragraph('Reference base',s['H']),Paragraph('Histology: A Text and Atlas with Correlated Cell and Molecular Biology; Gray’s Anatomy for Students; General Anatomy and Musculoskeletal System, Thieme Atlas. This PDF is an examination-revision aid.',s['B'])] doc=SimpleDocTemplate(OUT,pagesize=A4,leftMargin=1.3*cm,rightMargin=1.3*cm,topMargin=1.22*cm,bottomMargin=1.48*cm,title='Histology and Thorax University Short Answers');doc.build(story,onFirstPage=footer,onLaterPages=footer) r=PdfReader(OUT);t=''.join(x.extract_text() or '' for x in r.pages);print(len(r.pages),os.path.getsize(OUT),[x for x in ['Histology of duodenum','Microanatomy of suprarenal gland','Layers of retina','Major diaphragmatic openings','Thoraco-abdominal diaphragm'] if x not in t]) PY python "/tmp/workspace/histology-thorax-university-notes/src/build.py" && python - <<'PY' from pypdf import PdfReader,PdfWriter from pathlib import Path inputs=[ '/tmp/workspace/lower-limb-university-notes/output/Lower_Limb_University_Short_Answers.pdf', '/tmp/workspace/abdomen-gi-university-notes/output/Abdomen_and_GI_University_Short_Answers.pdf', '/tmp/workspace/pelvis-perineum-university-notes/output/Pelvis_and_Perineum_University_Short_Answers.pdf', '/tmp/workspace/embryology-university-notes/output/Embryology_University_Short_Answers.pdf', '/tmp/workspace/histology-thorax-university-notes/output/Histology_and_Thorax_University_Short_Answers.pdf'] out='/tmp/workspace/complete-anatomy-university-revision/output/Complete_Anatomy_University_Revision_57_PYQs.pdf' w=PdfWriter() for p in inputs: r=PdfReader(p) for page in r.pages:w.add_page(page) with open(out,'wb') as f:w.write(f) r=PdfReader(out);text='\n'.join(p.extract_text() or '' for p in r.pages) keys=['Femoral canal','Portal vein','Supports of uterus','Descent of testis','Hepatic segments','Blood supply of stomach','Perineal body','Adductor canal','Development of uterus','Development of pancreas','Histology of duodenum','Development of kidney','Microanatomy of suprarenal gland','Gastrulation','Placental barrier','Layers of retina','Deep perineal pouch'] print('MERGED',len(r.pages),Path(out).stat().st_size,[x for x in keys if x not in text]) PY