Can you provide high yielding points notes for gross Anatomy prelims topic .. ( snells clinical anatomy)

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1. Dissection of anterior abdominal wall — Inguinal canal; Inguinal rings; Spermatic cord; Scrotum 2. Abdominal cavity — Embryology; General arrangement; Peritoneum 3. Opening up of the abdominal cavity — Examination of general arrangement of the GIT; Celiac artery; Liver; Pancreas; Spleen; Gallbladder; Mesenteric artery; Jejunum; Ileum; Large intestine 4. Abdominal cavity — Esophagus; Stomach; Small intestine (SI); Large intestine (LI) 5. Abdominal cavity — Accessory organs of GIT: Liver; Gallbladder; Pancreas; Spleen 6. Dissection of inferior mesenteric artery (IMA) — Large intestine; Kidneys; Ureters; Suprarenal glands; Lumbar plexus; Posterior abdominal wall; Aorta; Inferior vena cava 7. Abdominal cavity — Retroperitoneal space; Kidneys and ureters; Suprarenal glands; Vessels of posterior abdominal wall; Nerves of posterior abdominal wall 8. Imaging of abdomen 9. Ultrasonography of abdomen and pelvis — Study of pelvic bones; Dissection of pelvic wall; Dissection of pelvic cavity and perineum; Gluteal region; Splitting up of the pelvic bone 10. Pelvic wall 11. Male pelvis 12. Dissection of pelvic wall — Study of pelvic bones; Dissection of pelvic cavity and perineum; Gluteal region; Splitting up of the pelvic bone 13. Female pelvic wall & cavity

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Here are your complete high-yield prelims notes for all 13 topics, based on Snell's Clinical Anatomy principles and confirmed with Gray's Anatomy for Students library content:

HIGH-YIELD GROSS ANATOMY PRELIMS NOTES

Abdomen, Pelvis & Perineum - Snell's Clinical Anatomy


TOPIC 1 - Anterior Abdominal Wall, Inguinal Canal, Spermatic Cord & Scrotum

Layers of the Anterior Abdominal Wall (superficial to deep)

  1. Skin
  2. Superficial fascia (Camper's - fatty layer; Scarpa's - membranous layer)
  3. External oblique aponeurosis
  4. Internal oblique muscle
  5. Transversus abdominis
  6. Transversalis fascia
  7. Extraperitoneal fat
  8. Parietal peritoneum
Mnemonic for muscles: "SEITE" - Skin, External oblique, Internal oblique, Transversus, Extra-peritoneal

Inguinal Canal

  • Oblique passage, ~4 cm long, runs from deep ring to superficial ring, parallel to and just above the inguinal ligament
  • Direction: supero-laterally (deep ring) → infero-medially (superficial ring)
WallStructure
AnteriorAponeurosis of external oblique (whole length) + internal oblique laterally
PosteriorTransversalis fascia (whole length) + conjoint tendon medially
RoofArching fibers of internal oblique + transversus abdominis
FloorInguinal ligament (medial half) + lacunar ligament medially

Inguinal Rings

Deep (Internal) Ring:
  • Opening in transversalis fascia
  • Located midway between ASIS and pubic symphysis, just above inguinal ligament
  • Lateral to inferior epigastric vessels
  • Gives rise to internal spermatic fascia
Superficial (External) Ring:
  • Triangular defect in external oblique aponeurosis
  • Located superior to pubic tubercle
  • Gives rise to external spermatic fascia
Clinically important: Indirect hernia exits through deep ring (lateral to inferior epigastric); Direct hernia bulges through Hesselbach's triangle (medial to inferior epigastric) - "MD - Medial = Direct"

Hesselbach's (Inguinal) Triangle

  • Medially: lateral edge of rectus abdominis
  • Laterally: inferior epigastric vessels
  • Inferiorly: inguinal ligament

Spermatic Cord

Contents (mnemonic "3 arteries, 3 nerves, 3 others"):
  • 3 Arteries: Testicular artery (from aorta at L2), Cremasteric artery (from inferior epigastric), Artery to vas deferens (from inferior vesical)
  • 3 Nerves: Genital branch of genitofemoral nerve (cremaster), Sympathetic nerves, Ilioinguinal nerve (outside the cord, in the canal)
  • 3 Others: Vas deferens, Pampiniform plexus, Lymphatics
3 Fascial Coverings (from inside out):
  1. Internal spermatic fascia (from transversalis fascia at deep ring)
  2. Cremasteric fascia & muscle (from internal oblique)
  3. External spermatic fascia (from external oblique aponeurosis at superficial ring)

Scrotum

  • Contains testes, epididymides, lower parts of spermatic cords
  • Layers correspond to anterior abdominal wall layers
  • Dartos muscle (in superficial fascia) = smooth muscle, responsible for scrotal wrinkling in cold
  • Blood supply: anterior scrotal aa. from femoral; posterior scrotal aa. from perineal artery
  • Lymphatics drain to inguinal nodes (not iliac - important for testicular vs. scrotal pathology)
Note: Testicular lymphatics drain to para-aortic nodes (L2 level) because testes develop retroperitoneally

TOPIC 2 - Abdominal Cavity: Embryology, General Arrangement & Peritoneum

Embryology - Key Points

  • 4th week: Gut tube forms (foregut, midgut, hindgut)
  • Gut derived from endoderm; vasculature/connective tissue from mesoderm
  • Foregut supplied by celiac artery; Midgut by SMA; Hindgut by IMA
  • Physiological herniation of midgut into umbilical cord at week 6, returns at week 10
  • Malrotation → volvulus; failure of return → omphalocele
  • Gastroschisis - lateral wall defect, no covering membrane (right of umbilicus)
  • Omphalocele - failure of bowel to return, covered by peritoneum
  • Meckel's diverticulum - remnant of vitello-intestinal duct; 2% population, 2 inches long, 2 feet from ileocecal valve, 2 types of ectopic mucosa (gastric, pancreatic)

Peritoneum

  • Thin serous membrane lining the abdominal cavity
  • Parietal peritoneum - lines walls (somatic pain, well localized)
  • Visceral peritoneum - covers organs (autonomic pain, poorly localized)
  • Peritoneal cavity - potential space; closed in males, open in females (via uterine tubes - hence ascending infection possible)
  • Contains peritoneal fluid (~100 mL normally) - acts as lubricant

Mesenteries & Ligaments

  • Greater omentum - double fold from greater curvature of stomach, hangs like apron; "policeman of abdomen" - walls off infection
  • Lesser omentum - connects lesser curvature of stomach to liver; contains hepatic artery, portal vein, bile duct in free edge (hepatoduodenal ligament)
  • Epiploic foramen (of Winslow) - entrance to lesser sac; bounded by: hepatoduodenal ligament (anteriorly), IVC (posteriorly), caudate lobe of liver (superiorly), 1st part of duodenum (inferiorly)
  • Lesser sac (omental bursa) - posterior to stomach/lesser omentum

Peritoneal Pouches (Clinically Important)

  • Hepatorenal recess (Morrison's pouch) - most dependent part in supine; fluid collects here first
  • Rectouterine pouch (Pouch of Douglas) - most dependent in erect female
  • Rectovesical pouch - between rectum and bladder in males
  • Paracolic gutters - allow fluid to spread between supine and erect positions

Retroperitoneal Structures (mnemonic "SAD PUCKER")

  • Suprarenal glands, Aorta/IVC, Duodenum (2nd-4th parts), Pancreas (except tail), Ureters, Colon (ascending and descending), Kidneys, Esophagus (lower), Rectum (lower 2/3)

TOPIC 3 - GIT Arrangement, Celiac Artery, Liver, Pancreas, Spleen, Gallbladder, Mesenteric Arteries, Jejunum, Ileum, Large Intestine

Celiac Artery (Celiac Trunk)

  • Arises from aorta at T12/L1 level, just below aortic hiatus
  • 3 branches: Left gastric, Splenic, Common hepatic (mnemonic: "LSC" - "Lick Some Candy")
  • Left gastric: smallest branch; supplies lower esophagus + lesser curvature
  • Splenic: largest; goes along upper border of pancreas; gives left gastroepiploic, short gastric arteries
  • Common hepatic → proper hepatic artery (right + left) + gastroduodenal artery

Superior Mesenteric Artery (SMA)

  • Arises at L1 (behind neck of pancreas)
  • Supplies midgut (from 2nd part of duodenum to 2/3 of transverse colon)
  • Branches: inferior pancreaticoduodenal, intestinal arteries (jejunal/ileal), ileocolic, right colic, middle colic

Inferior Mesenteric Artery (IMA)

  • Arises at L3
  • Supplies hindgut (left 1/3 of transverse colon to upper rectum)
  • Branches: left colic, sigmoid arteries, superior rectal artery
  • Critical point of Griffiths = splenic flexure (watershed zone between SMA & IMA) - vulnerable to ischemia

Liver

  • Largest abdominal organ (~1.5 kg)
  • Right lobe : Left lobe (5:1 anatomically); but functionally divided by Cantlie's line (gallbladder fossa to IVC)
  • 8 functional segments (Couinaud) - each with its own portal triad + hepatic vein drainage
  • Right and left lobes + caudate (segment 1) + quadrate (segment 4)
  • Portal triad = portal vein + hepatic artery + bile duct
  • Blood supply: Portal vein (75% blood, 50% oxygen) + Hepatic artery (25% blood, 50% oxygen)
  • Bare area - not covered by peritoneum; in contact with diaphragm (right side); bounded by coronary ligament
  • Ligamentum teres = obliterated left umbilical vein; lies in free edge of falciform ligament
  • Ligamentum venosum = obliterated ductus venosus; lies in fissure on posterior surface
  • Porta hepatis: portal vein (posterior), hepatic artery (left), bile duct (right) - "Bile Artery Portal" from right to left

Gallbladder

  • Lies in gallbladder fossa on inferior surface of liver
  • Fundus, Body, Neck (continues as cystic duct with spiral valve of Heister)
  • Hartmann's pouch - junction of neck and cystic duct; gallstones lodge here
  • Cystic artery = branch of right hepatic artery (usually) - runs in Calot's triangle (cystic duct, common hepatic duct, liver)
  • Blood supply: Cystic artery from right hepatic; venous drainage directly into liver
  • Referred pain: right shoulder tip (diaphragmatic irritation - C3, C4)

Pancreas

  • Retroperitoneal (except tail, which is in splenorenal ligament)
  • Head (in duodenal C-loop), Neck (over portal vein/SMA), Body, Tail (reaches splenic hilum)
  • Main duct of Wirsung + Accessory duct of Santorini
  • Ampulla of Vater (hepatopancreatic ampulla) opens into 2nd part of duodenum at major duodenal papilla
  • Sphincter of Oddi controls flow
  • Relations of head: anteriorly - transverse colon; posteriorly - IVC, aorta, left renal vein, portal vein
  • Blood supply: Superior pancreaticoduodenal (from gastroduodenal a.) + Inferior pancreaticoduodenal (from SMA) for head; Splenic artery branches for body/tail

Spleen

  • Lies in left hypochondrium (posterior to 9th, 10th, 11th ribs)
  • Weight: ~150 g
  • Surfaces: diaphragmatic, renal, gastric, colic
  • Notch on anterior border - palpated when splenomegaly (differentiates from kidney/other masses)
  • Blood supply: Splenic artery (tortuous course along upper border of pancreas)
  • Hilum: splenic vessels + tail of pancreas
  • Supported by: Gastrosplenic ligament (short gastric, left gastroepiploic vessels) + Splenorenal ligament (splenic vessels, tail of pancreas)
  • Accessory spleen in 10% - usually at hilum
  • Rupture → blood in left paracolic gutter; Kehr's sign (left shoulder tip pain)

Jejunum vs. Ileum (High-Yield Differences)

FeatureJejunumIleum
LocationUpper left abdomenLower right abdomen
Wall thicknessThickerThinner
Plicae circulares (valvulae conniventes)ProminentFew/absent
Vasa rectaLongShort
Arcades1-2 tiers4-5 tiers (complex)
Peyer's patchesFewMany (terminal ileum)
ColorDeeper redPaler pink
Fat in mesenteryLessMore

Large Intestine - Distinguishing Features

  • Taenia coli - 3 longitudinal muscle bands (converge at appendix base - useful landmark)
  • Haustra - sacculations
  • Appendices epiploicae - fat-filled peritoneal tags
  • Cecum - widest, most distensible part; no mesentery
  • Appendix - at McBurney's point (1/3 from ASIS on spinoumbilical line); base at confluence of taenia coli (McBurney's point = 2/3 of the way from umbilicus to ASIS - actually 1/3 from ASIS)
  • Blood supply: ileocolic artery (SMA branch) → appendicular artery (end artery - hence gangrene in appendicitis)
  • Flexures: Hepatic (right colic) - at right, more acute; Splenic (left colic) - higher, more acute, more fixed
  • Sigmoid colon - most mobile part of large intestine; has mesentery; common site of volvulus

TOPIC 4 - Abdominal Cavity: Esophagus, Stomach, SI & LI

Abdominal Esophagus

  • ~2 cm long, enters abdomen through esophageal hiatus at T10 (with vagal trunks)
  • Anterior vagal trunk (mainly left vagus), Posterior vagal trunk (mainly right vagus)
  • Lower esophageal sphincter (LES/Cardiac sphincter) - physiological, not anatomical; prevents reflux
  • Blood: Left gastric artery + left inferior phrenic artery
  • Portal-systemic anastomosis here - varices in portal hypertension

Stomach

  • Parts: Cardia, Fundus, Body, Pyloric antrum, Pyloric canal, Pylorus
  • Pyloric sphincter - palpable thickened ring; at L1 level (transpyloric plane)
  • Transpyloric plane also lies at: L1, fundus of gallbladder, hilum of kidneys, 1st lumbar vertebra, termination of spinal cord (in adults), SMA origin
  • Curvatures: Lesser (lesser omentum attached) and Greater (greater omentum attached)
  • Rugae = longitudinal folds of mucosa (allow distension)
  • Blood supply: Rich anastomotic supply from all branches of celiac trunk:
    • Lesser curvature: Right + Left gastric arteries
    • Greater curvature: Right + Left gastroepiploic arteries
    • Fundus: Short gastric arteries (from splenic a.)
    • Posterior: Posterior gastric artery (from splenic a.)
  • Lymphatics follow arteries; ultimately drain to celiac nodes
  • Peptic ulcers: Duodenal ulcer (anterior wall) > Gastric ulcer; anterior DU → peritonitis; posterior DU → erodes gastroduodenal artery → hematemesis

Duodenum

  • ~25 cm (10 inches), C-shaped, retroperitoneal (except 1st cm)
  • 4 parts:
    1. First (superior/duodenal cap) - most common ulcer site, has peritoneum
    2. Second (descending) - bile duct + pancreatic duct open here (major papilla); minor papilla above
    3. Third (horizontal/inferior) - crossed by SMA/SMV + root of mesentery
    4. Fourth (ascending) - becomes jejunum at duodenojejunal flexure supported by ligament of Treitz (suspensory muscle, arises from right crus of diaphragm)

Small Intestine (full)

  • Total length: ~6-7 m; jejunum ~2/5, ileum ~3/5
  • Complete peritoneal covering (intraperitoneal)
  • Mesentery root runs from L2 on left to right iliac fossa (~15 cm)
  • Villi → increase surface area; Microvilli (brush border) → further amplification
  • Absorption: Duodenum (iron, calcium); Ileum (B12 + bile salts - unique)

Large Intestine

  • Total ~1.5 m
  • Ascending (retroperitoneal), Transverse (intraperitoneal, long mesentery), Descending (retroperitoneal), Sigmoid (intraperitoneal), Rectum, Anal canal
  • Blood supply watershed: Splenic flexure (between SMA and IMA territories)
  • Venous drainage: Superior rectal → IMA → portal; Middle/inferior rectal → iliac → caval
  • Portal-systemic anastomosis at anorectal junction (hemorrhoids in portal hypertension)

TOPIC 5 - Accessory GIT Organs: Liver, Gallbladder, Pancreas, Spleen

(See detailed notes under Topic 3 above for each organ)

Additional High-Yield Points

Liver Clinical:
  • Liver biopsy - 8th-9th intercostal space, midaxillary line, right side, on expiration (reduces risk of pneumothorax/lung puncture)
  • Child-Pugh/MELD score for liver function
  • Hepatic veins (3 main) drain into IVC just below diaphragm
Biliary System:
  • Right + Left hepatic ducts → Common hepatic duct → Common bile duct (CBD)
  • CBD = ~7-8 cm long, runs in hepatoduodenal ligament
  • CBD passes posterior to 1st part of duodenum → behind/through head of pancreas → joins pancreatic duct at ampulla of Vater
  • CBD diameter > 8 mm on ultrasound = dilated (10 mm if post-cholecystectomy)
Pancreas Clinical:
  • Head lies in C-loop of duodenum; cancer of head → obstructive jaundice (blocks CBD)
  • Body/tail cancer detected late → pain referred to back (T10 level)
  • Uncinate process of head: hooks behind SMA; pancreatitis/cancer may compress SMA
  • Annular pancreas - congenital encirclement of duodenum → duodenal obstruction (double bubble sign on X-ray)
Spleen Clinical:
  • NOT palpable normally; becomes palpable when 3x normal size
  • Differentiate from left kidney by: notch, can't get above it, moves diagonally with respiration, dull to percussion
  • Hypersplenism: splenomegaly + cytopenias
  • Kehr's sign = left shoulder tip pain from diaphragmatic irritation by blood (splenic rupture)

TOPIC 6 & 7 - Retroperitoneal Space, Kidneys, Ureters, Suprarenal Glands, Posterior Abdominal Wall Vessels & Nerves, IMA, Lumbar Plexus, Aorta, IVC

Kidneys

  • Located at T12-L3 level (right kidney slightly lower due to liver)
  • Hilum at transpyloric plane (L1): Vein (anterior), Artery (middle), ureter/Pelvis (posterior) - "VAP" from anterior to posterior
  • Surrounded by perirenal fat → renal fascia (Gerota's fascia) → pararenal fat
  • Relations of right kidney: anterior - right lobe of liver, 2nd part of duodenum, ascending colon, right colic flexure; posterior - diaphragm, psoas, quadratus lumborum, 12th rib
  • Relations of left kidney: anterior - stomach, spleen, tail of pancreas, jejunum, left colic flexure; posterior - diaphragm, psoas, quadratus lumborum, 11th & 12th ribs

Ureters

  • 25-30 cm long; cross over iliac vessels at bifurcation of common iliac artery at pelvic brim (sacroiliac joint level)
  • 3 points of narrowing (stones lodge here):
    1. Pelviureteric junction (PUJ)
    2. Pelvic brim (crossing iliac vessels)
    3. Vesicoureteric junction (VUJ) - most narrow
  • Ureter passes anterior to gonadal vessels but posterior to gonadal vessels on the brim - "water under the bridge"
  • "Water under the bridge" = uterine artery crosses over ureter in the broad ligament (clinically important in hysterectomy)
  • Blood supply: segmental from aorta, gonadal, iliac, vesical arteries

Suprarenal (Adrenal) Glands

  • Retroperitoneal, cap the upper poles of kidneys within Gerota's fascia
  • Right suprarenal - pyramidal, behind IVC, medial to liver
  • Left suprarenal - semilunar, behind stomach/pancreas, related to splenic vessels
  • Blood supply: superior suprarenal (from inferior phrenic), middle suprarenal (from aorta), inferior suprarenal (from renal artery)
  • Venous drainage: Right suprarenal vein directly to IVC (short, important surgically); Left suprarenal vein → left renal vein

Aorta (Abdominal)

  • Enters at T12 (aortic hiatus, posterior to median arcuate ligament)
  • Bifurcates at L4 into common iliac arteries
  • Branches:
BranchLevel
Inferior phrenicT12
Celiac trunkT12/L1
SMAL1
Middle suprarenalL1
Renal arteriesL1-L2
Gonadal (testicular/ovarian)L2
IMAL3
Common iliacL4
Median sacralL4
  • Aortic aneurysm - usually infrarenal (below renal arteries), pulsatile mass at umbilicus

IVC (Inferior Vena Cava)

  • Begins at L5 (right of aorta) by union of common iliac veins
  • Passes through caval opening in diaphragm at T8
  • No IVC tributaries from gut - gut blood goes via portal vein to liver first

Portal Vein

  • Forms behind neck of pancreas at L2 by union of SMV + splenic vein (often IMV joins here too)
  • Drains: All gut, spleen, pancreas, gallbladder
  • Portal hypertension > 10-12 mmHg → varices at portosystemic anastomoses

Lumbar Plexus (within psoas major)

  • Roots: L1-L4 (+ some T12)
  • Branches (L-I-G-O-F-A):
    • L1 → Iliohypogastric + Ilioinguinal
    • Genitofemoral (L1,2) - exits through psoas
    • Lateral cutaneous nerve of thigh (L2,3) - exits lateral to psoas, under inguinal ligament (compression = meralgia paresthetica)
    • Obturator nerve (L2,3,4) - exits medial border of psoas, runs through obturator foramen
    • Femoral nerve (L2,3,4) - exits lateral to psoas, under inguinal ligament lateral to femoral artery
    • Accessory obturator (L3,4) - inconstant

TOPIC 8 - Imaging of the Abdomen

Plain X-ray (AXR) - High-Yield

  • Normal gas: stomach, colon (haustral pattern); small bowel (minimal)
  • Bowel obstruction: dilated loops; SBO - central, valvulae conniventes (stacking coins); LBO - peripheral, haustra
  • Pneumoperitoneum (perforated viscus) - air under diaphragm on erect CXR
  • Calcification: renal stones (90% radio-opaque), gallstones (10% radio-opaque), pancreatic calcification in chronic pancreatitis, aortic aneurysm wall calcification, appendicolith

Ultrasound (USG)

  • Best for: gallstones (>95% sensitive), liver, kidneys, ascites, pancreas (gas limits), aorta
  • Murphy's sign on USG - probe pressure over gallbladder causes maximal tenderness = acute cholecystitis
  • Normal CBD <8 mm; portal vein <13 mm; aorta <3 cm (>3 cm = aneurysm)

CT Abdomen

  • Gold standard for: acute abdomen, trauma, staging cancers, pancreatitis (Balthazar score)
  • Layers imaged: Remember SALTPAN - Skin, Aponeurosis, Liver, Transplant evaluation, Peritoneum, Arteries, Nodes

MRI

  • Best for: liver lesions, MRCP (biliary/pancreatic ductal anatomy), soft tissue, no radiation
  • MRCP - non-invasive alternative to ERCP for diagnostic purposes

TOPIC 9 & 12 - Ultrasonography of Abdomen/Pelvis; Pelvic Bones; Pelvic Wall; Gluteal Region

Pelvic Bones

  • Bony pelvis formed by: 2 hip bones (ilium, ischium, pubis) + sacrum + coccyx
  • Hip bone - ossification of 3 bones at triradiate cartilage at age 14-16 years
  • Pubic symphysis - secondary cartilaginous joint
  • Sacroiliac joints - synovial (anteriorly) + syndesmosis (posteriorly)

True vs. False Pelvis

FeatureFalse PelvisTrue Pelvis
LocationAbove pelvic inletBelow pelvic inlet
Bounded byIliac fossaPubis, ischium, sacrum
ContentLower abdominal organsPelvic organs

Pelvic Inlet (Pelvic Brim) Landmarks

  • Anteriorly: pubic symphysis
  • Laterally: iliopectineal line (arcuate line + pectineal line)
  • Posteriorly: sacral promontory

Obstetric Diameters (True Pelvis)

  • True conjugate (anatomical) = 11 cm (sacral promontory to upper pubic symphysis)
  • Obstetric/Diagonal conjugate = 12.5 cm (sacral promontory to lower pubic symphysis)
  • Transverse diameter of inlet = 13 cm (widest)

Pelvic Types (Caldwell-Moloy)

  1. Gynecoid (round) - most favorable for delivery (50%)
  2. Android (heart-shaped) - male type, poor for delivery
  3. Anthropoid (oval A-P) - common in tall women
  4. Platypelloid (oval transverse) - flat type, rare

Gluteal Region

  • Piriformis muscle is the key landmark - everything relates to above/below it
  • Above piriformis (via greater sciatic foramen): Superior gluteal vessels & nerve
  • Below piriformis: Inferior gluteal v/n, sciatic nerve, pudendal n/v, nerve to obturator internus, nerve to quadratus femoris, posterior cutaneous nerve of thigh
  • Sciatic nerve (L4, L5, S1, S2, S3) - largest nerve in body; exits below piriformis, halfway between ASIS and ischial tuberosity
  • Safe injection site in gluteal region: upper outer quadrant (to avoid sciatic nerve)
  • Trendelenburg test - gluteus medius/minimus weakness (superior gluteal nerve L4, L5)

TOPIC 10 - Pelvic Wall

Muscles of Pelvic Wall

MuscleOriginInsertionNerveAction
PiriformisSacrumGT of femurS1, S2Lateral rotation
Obturator internusObturator membraneGT (medial surface)Nerve to OI (L5, S1)Lateral rotation
Levator aniPubis, tendinous arch, ischial spinePerineal body, coccyx, anococcygeal bodyS4 (mainly) + pudendalPelvic floor support
CoccygeusIschial spineSacrum/coccyxS4, S5Supports pelvic floor

Pelvic Diaphragm

  • Formed by levator ani + coccygeus muscles
  • Levator ani = pubococcygeus + iliococcygeus + puborectalis
  • Puborectalis - forms a sling around anorectal junction; maintains anorectal angle (~90°) - essential for continence
  • Urogenital hiatus in levator ani transmits: urethra (+ vagina in female)
  • Pelvic floor weakness → prolapse, incontinence

Pelvic Fascia

  • Parietal (lines walls), Visceral (surrounds organs), Ligaments (condensations)
  • Cardinal ligament (transverse cervical/Mackenrodt's) - main support of uterus; contains uterine artery
  • Uterosacral ligaments - posterior support
  • Pubocervical ligaments - anterior support

TOPIC 11 - Male Pelvis

Male Pelvic Organs

  • Urinary bladder, prostate, seminal vesicles, vas deferens, rectum

Prostate

  • Walnut-sized gland, surrounds urethra below bladder neck
  • Zones: Peripheral (BPH/cancer), Central, Transitional (BPH), Anterior
  • Blood supply: Inferior vesical + middle rectal arteries
  • Venous drainage: Prostatic venous plexus (Santorini's) → internal iliac vein; also communicates with vertebral venous plexus (Batson's) → prostate cancer metastasizes to spine (osteosclerotic lesions)
  • DRE (digital rectal exam) - posterior surface palpable; median sulcus; nodularity = cancer
  • PSA (prostate specific antigen): >4 ng/mL suspicious; >10 ng/mL highly suspicious

Seminal Vesicles

  • Lie posterior to bladder, above prostate
  • Duct joins vas deferens to form ejaculatory duct (opens into prostatic urethra at verumontanum)
  • Seminal vesicles contribute ~60% of seminal fluid (fructose, prostaglandins)

Bladder

  • Trigone - smooth triangular area; ureteric orifices + internal urethral orifice; no rugae; most common site of bladder carcinoma
  • Detrusor muscle (smooth); internal sphincter (smooth, involuntary); external sphincter (skeletal, voluntary, at UG hiatus)
  • Blood supply: Superior + inferior vesical arteries (from internal iliac)

Male Urethra

  • Prostatic (~3 cm): verumontanum, utricle, ejaculatory duct openings
  • Membranous (~2 cm): external sphincter here; most fixed and most vulnerable to trauma (pelvic fractures)
  • Spongy/penile (~15 cm): passes through corpus spongiosum
  • Widest: Prostatic; Narrowest: External urethral meatus

TOPIC 13 - Female Pelvic Wall & Cavity

Uterus

  • Pear-shaped, ~7.5 × 5 × 2.5 cm; anteverted + anteflexed (normal position)
  • Parts: Fundus, Body, Isthmus (lower uterine segment), Cervix
  • Cervix: external os (stratified squamous) + internal os; transformation zone = junction of epithelia (most common site of cervical cancer)
  • Broad ligament - double fold of peritoneum containing: uterine tube (in mesosalpinx), ovary (in mesovarium), round ligament (in mesometrium)
  • Positions: Anteverted + anteflexed = normal; Retroversion (20%); Retroflexion

Uterine Supports

  • Primary support: Pelvic floor (levator ani)
  • Secondary support:
    • Cardinal ligament - main ligament; contains uterine artery; crosses ureter ("ureter under bridge")
    • Uterosacral ligaments (posterior)
    • Round ligament (keeps fundus anteverted - no bearing strength)
    • Pubocervical ligament (anterior)

Uterine Blood Supply

  • Uterine artery (from internal iliac) - crosses over ureter 2 cm lateral to cervix at level of internal os
  • Anastomoses with ovarian artery
  • Surgical dictum: "Water under the bridge" - ureter is below uterine artery (risk of ureteric injury in hysterectomy)

Fallopian Tubes

  • ~10 cm; Parts: Interstitial (intramural), Isthmus, Ampulla (widest, commonest site of ectopic pregnancy), Infundibulum (fimbriae)
  • Blood: uterine + ovarian arteries

Ovaries

  • 3 × 2 × 1 cm; position variable
  • Suspended by: mesovarium, ovarian ligament (to uterus), suspensory ligament (infundibulopelvic lig) containing ovarian vessels
  • NOT covered by peritoneum (germinal epithelium = cuboidal, not mesothelium)
  • Lymphatics: para-aortic nodes (same as testes - shared embryological origin)

Vagina

  • ~8-9 cm; anterior wall shorter than posterior (7 vs. 9 cm)
  • Fornices - lateral, anterior, posterior; posterior fornix deepest (related to Pouch of Douglas)
  • Blood supply: Vaginal artery (from internal iliac)

Rectum

  • S3 level to anorectal junction (levator ani)
  • Houston's valves (transverse rectal folds) - 3 in number (2 on left, 1 on right)
  • Peritoneal relations: upper 1/3 (covered front + sides), middle 1/3 (front only), lower 1/3 (extraperitoneal)
  • Anal canal: 4 cm; dentate (pectinate) line separates upper (endoderm, internal hemorrhoids) from lower (ectoderm, external hemorrhoids)

Pudendal Nerve

  • S2, S3, S4 - "nerve of perineum"
  • Exits greater sciatic foramen below piriformis → crosses sacrospinous ligament → enters lesser sciatic foramen → enters pudendal canal (Alcock's canal)
  • Branches: dorsal nerve of penis/clitoris, perineal nerve, inferior rectal nerve
  • Pudendal nerve block - at ischial spine (transvaginal approach or transperineal)

QUICK-REFERENCE: Clinical Correlations Summary

ConditionAnatomical BasisKey Point
Indirect inguinal herniaPatent processus vaginalisLateral to inferior epigastric; congenital
Direct inguinal herniaWeak posterior wallMedial to inferior epigastric; acquired
Femoral herniaBelow inguinal ligament in femoral canalMore common in women (wider pelvis)
AppendicitisMcBurney's pointBase of appendix = confluence of taenia
SplenomegalyLeft hypochondrium massNotch + can't get above + diagonal movement
Portal hypertensionPorto-systemic anastomosesVarices at 4 sites
Ureteric colic3 narrowingsPUJ, pelvic brim, VUJ
Prostate cancer spreadBatson's venous plexusOsteosclerotic spinal metastases
Ureteric injury in hysterectomy"Water under bridge"Ureter crossed by uterine artery
Splenic flexure ischemiaWatershed zone SMA/IMAGriffith's point

Sources: Gray's Anatomy for Students (confirmed from library); Snell's Clinical Anatomy principles; Bailey & Love's Surgery (inguinal canal anatomy)
These notes cover all 13 dissection/topic areas from your prelims syllabus. Each major subtopic is exam-oriented with the clinical correlations that carry the most marks in MCQ and short-answer formats. Let me know if you want any topic expanded further - for example, a deeper dive on the pelvic floor, detailed peritoneal recesses, or more embryology points.

Excellent can you please provide this in pdf format with diagrams Cadaver sections

Reading File
Searching Images

inguinal canal spermatic cord anatomy diagram

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peritoneum abdominal cavity arrangement diagram

Searching Images

celiac artery branches liver stomach spleen

This clinical photograph displays a gross macrospecimen dissection of the upper abdominal viscera from a 63-year-old female, highlighting the celiac trunk (1) and its vascular branches. The central celiac trunk is shown giving rise to the left gastric artery (4) ascending toward the lesser curvature of the stomach (12), the common hepatic artery (2) coursing toward the caudate lobe of the liver (11), and the splenic artery (3) traveling toward the spleen (9). Notable anatomical variations include an accessory left gastric artery (5) and posterior gastric arteries (6) originating from the splenic artery. The splenic vein (8) is visible running inferior to the splenic artery. The pancreas (10) is situated inferior to the splenic vessels, demonstrating its lobulated texture. This image serves as a detailed anatomical reference for the trifurcation of the celiac trunk, the vascular supply to the foregut organs (stomach, spleen, liver, pancreas), and common arterial variations relevant to surgical oncology and gastroenterology training.

This clinical photograph displays a gross macrospecimen dissection of the upper abdominal viscera from a 63-year-old female, highlighting the celiac trunk (1) and its vascular branches. The central celiac trunk is shown giving rise to the left gastric artery (4) ascending toward the lesser curvature of the stomach (12), the common hepatic artery (2) coursing toward the caudate lobe of the liver (11), and the splenic artery (3) traveling toward the spleen (9). Notable anatomical variations include an accessory left gastric artery (5) and posterior gastric arteries (6) originating from the splenic artery. The splenic vein (8) is visible running inferior to the splenic artery. The pancreas (10) is situated inferior to the splenic vessels, demonstrating its lobulated texture. This image serves as a detailed anatomical reference for the trifurcation of the celiac trunk, the vascular supply to the foregut organs (stomach, spleen, liver, pancreas), and common arterial variations relevant to surgical oncology and gastroenterology training.

**Imaging Modality:** Axial computed tomography (CT) scan of the upper abdomen with intravenous contrast.

**Imaging Modality:** Axial computed tomography (CT) scan of the upper abdomen with intravenous contrast.

This diagnostic image is a selective digital subtraction angiography (DSA) of the abdominal celiac trunk, demonstrating normal vascular anatomy. The angiography utilizes radio-opaque contrast to highlight the trifurcation of the celiac artery. The three primary branches are clearly identified and labeled: the left gastric artery, which ascends toward the lesser curvature of the stomach; the splenic artery, which follows a characteristic tortuous course toward the spleen on the right side of the image; and the common hepatic artery. Further distal branching is visible, where the common hepatic artery divides into the proper hepatic artery and the gastroduodenal artery. The gastroduodenal artery is seen descending and giving rise to the right gastroepiploic artery. A diagnostic catheter is visible in the center of the frame, having been navigated into the trunk. This image serves as a high-quality anatomical reference for interventional radiology and vascular surgery education, illustrating the key arterial supply to the foregut organs including the liver, stomach, and spleen.

This diagnostic image is a selective digital subtraction angiography (DSA) of the abdominal celiac trunk, demonstrating normal vascular anatomy. The angiography utilizes radio-opaque contrast to highlight the trifurcation of the celiac artery. The three primary branches are clearly identified and labeled: the left gastric artery, which ascends toward the lesser curvature of the stomach; the splenic artery, which follows a characteristic tortuous course toward the spleen on the right side of the image; and the common hepatic artery. Further distal branching is visible, where the common hepatic artery divides into the proper hepatic artery and the gastroduodenal artery. The gastroduodenal artery is seen descending and giving rise to the right gastroepiploic artery. A diagnostic catheter is visible in the center of the frame, having been navigated into the trunk. This image serves as a high-quality anatomical reference for interventional radiology and vascular surgery education, illustrating the key arterial supply to the foregut organs including the liver, stomach, and spleen.

Searching Images

kidney ureter posterior abdominal wall cadaver dissection

This clinical photograph displays a gross anatomical dissection of the posterior abdominal wall in a human cadaver, highlighting a rare anatomical variant of the left testicular vein (LTV). The LTV is seen ascending retroperitoneally toward the left renal vein (LRV). Unusually, it bifurcates (BF) into two distinct branches before terminating into the LRV. An oblique communication (OC) is visible between these two branches. Additionally, a slender communicating vein (CV) is observed passing anterior to the LRV to drain directly into the left suprarenal vein (LSRV). Key landmarks shown include the abdominal aorta (AA), inferior vena cava (IVC), left kidney (LK), and pancreas (PAN). The left testicular artery (LTA) and left ureter (LU) are also identified in their typical relative spatial positions. This specimen illustrates complex venous variations that are clinically significant for vascular, urological, and retroperitoneal surgical procedures, particularly regarding the drainage pathways of the pampiniform plexus and suprarenal systems.

This clinical photograph displays a gross anatomical dissection of the posterior abdominal wall in a human cadaver, highlighting a rare anatomical variant of the left testicular vein (LTV). The LTV is seen ascending retroperitoneally toward the left renal vein (LRV). Unusually, it bifurcates (BF) into two distinct branches before terminating into the LRV. An oblique communication (OC) is visible between these two branches. Additionally, a slender communicating vein (CV) is observed passing anterior to the LRV to drain directly into the left suprarenal vein (LSRV). Key landmarks shown include the abdominal aorta (AA), inferior vena cava (IVC), left kidney (LK), and pancreas (PAN). The left testicular artery (LTA) and left ureter (LU) are also identified in their typical relative spatial positions. This specimen illustrates complex venous variations that are clinically significant for vascular, urological, and retroperitoneal surgical procedures, particularly regarding the drainage pathways of the pampiniform plexus and suprarenal systems.

This clinical photograph displays a surgical dissection of the posterior abdominal wall and pelvic vasculature in a male cadaver, illustrating a variant of May-Thurner Syndrome (MTS). The visual focuses on the relationship between the aortic bifurcation and the inferior vena cava (IVC). A prominent right common iliac artery is shown crossing anteriorly over the distal segment of the IVC and the left common iliac vein. A teal outline highlights a pre-stenotic dilation of the inferior vena cava, indicating venous stasis caused by arterial compression. The right common iliac artery exhibits surface dimpling, characteristic of atherosclerotic plaque. Anatomical landmarks include the right kidney, right ureter, external iliac artery, and internal iliac artery. This image serves as an educational demonstration of vascular compression syndromes and anatomical variations in pelvic venous outflow. It is suitable for advanced medical students and surgical residents studying retroperitoneal anatomy and vascular pathology.

This clinical photograph displays a surgical dissection of the posterior abdominal wall and pelvic vasculature in a male cadaver, illustrating a variant of May-Thurner Syndrome (MTS). The visual focuses on the relationship between the aortic bifurcation and the inferior vena cava (IVC). A prominent right common iliac artery is shown crossing anteriorly over the distal segment of the IVC and the left common iliac vein. A teal outline highlights a pre-stenotic dilation of the inferior vena cava, indicating venous stasis caused by arterial compression. The right common iliac artery exhibits surface dimpling, characteristic of atherosclerotic plaque. Anatomical landmarks include the right kidney, right ureter, external iliac artery, and internal iliac artery. This image serves as an educational demonstration of vascular compression syndromes and anatomical variations in pelvic venous outflow. It is suitable for advanced medical students and surgical residents studying retroperitoneal anatomy and vascular pathology.

Searching Images

liver gallbladder bile duct anatomy

This intraoperative clinical photograph captures the hepatobiliary anatomy during a laparoscopic procedure. The image highlights a rare case of gallbladder agenesis, demonstrated by the conspicuous absence of the gallbladder in its expected location within the gallbladder fossa. The liver is visible in the superior aspect of the frame, exhibiting a smooth, dark reddish-brown surface with a characteristic glistening reflection. An arrow identifies the common bile duct (CBD), which appears as a vertical tubular structure in the hepatoduodenal ligament. Situated inferiorly is the duodenum, presenting as a larger, pinkish-red tubular organ with visible surface vasculature. The image serves as an educational reference for hepatobiliary surgical anatomy and the visual diagnosis of congenital gallbladder absence. Key structures labeled include the liver, common bile duct (CBD), and duodenum, emphasizing their spatial relationships when the gallbladder is naturally absent.

This intraoperative clinical photograph captures the hepatobiliary anatomy during a laparoscopic procedure. The image highlights a rare case of gallbladder agenesis, demonstrated by the conspicuous absence of the gallbladder in its expected location within the gallbladder fossa. The liver is visible in the superior aspect of the frame, exhibiting a smooth, dark reddish-brown surface with a characteristic glistening reflection. An arrow identifies the common bile duct (CBD), which appears as a vertical tubular structure in the hepatoduodenal ligament. Situated inferiorly is the duodenum, presenting as a larger, pinkish-red tubular organ with visible surface vasculature. The image serves as an educational reference for hepatobiliary surgical anatomy and the visual diagnosis of congenital gallbladder absence. Key structures labeled include the liver, common bile duct (CBD), and duodenum, emphasizing their spatial relationships when the gallbladder is naturally absent.

This diagnostic image is a Magnetic Resonance Cholangiopancreatography (MRCP) projection showing the anatomy of the biliary tree and gallbladder. The image highlights a significant anatomical variation involving an accessory liver lobe. Multiple white arrows point to an accessory bile duct that originates from the ectopic hepatic tissue and drains directly into the common hepatic duct. Additionally, a white arrowhead indicates a separate, tortuous cystic duct that follows an atypical path before opening into the primary bile duct. The gallbladder is visualized as a hyperintense, elongated structure of normal morphology. This clinical image is significant for demonstrating complex biliary branching patterns often associated with accessory liver lobes, which is critical for surgical planning to avoid iatrogenic injury. The educational focus is on hepatobiliary anatomy, congenital variants, and radiological interpretation of MRCP in the context of suspected accessory hepatic tissue.

This diagnostic image is a Magnetic Resonance Cholangiopancreatography (MRCP) projection showing the anatomy of the biliary tree and gallbladder. The image highlights a significant anatomical variation involving an accessory liver lobe. Multiple white arrows point to an accessory bile duct that originates from the ectopic hepatic tissue and drains directly into the common hepatic duct. Additionally, a white arrowhead indicates a separate, tortuous cystic duct that follows an atypical path before opening into the primary bile duct. The gallbladder is visualized as a hyperintense, elongated structure of normal morphology. This clinical image is significant for demonstrating complex biliary branching patterns often associated with accessory liver lobes, which is critical for surgical planning to avoid iatrogenic injury. The educational focus is on hepatobiliary anatomy, congenital variants, and radiological interpretation of MRCP in the context of suspected accessory hepatic tissue.

Searching Images

stomach duodenum jejunum ileum small intestine anatomy

Educational medical composite illustrating gastrointestinal anatomy and capsule transit through the gut. Panel A is an anatomical diagram of the human torso showing the stomach partitioned into the fundus, body, and antrum, and the small intestine divided into the duodenum, jejunum, and ileum. Panels B and C are stacked bar charts showing the statistical distribution of capsule location across 10 participants over 60 minutes, shifting from the stomach (proximal) to the ileum (distal). Panel D displays clinical diagnostic images consisting of serial abdominal X-rays from three participants. These radiographic images track a radiopaque capsule's transit over 60 minutes in the supine position. The top row illustrates a slow transit from the fundus to the duodenum; the middle row shows movement from the antrum to the jejunum; and the bottom row demonstrates rapid transit reaching the ileum by 60 minutes. The content illustrates gastroduodenal motility and the use of ingestible capsules for studying gastrointestinal physiology and interoception.

Educational medical composite illustrating gastrointestinal anatomy and capsule transit through the gut. Panel A is an anatomical diagram of the human torso showing the stomach partitioned into the fundus, body, and antrum, and the small intestine divided into the duodenum, jejunum, and ileum. Panels B and C are stacked bar charts showing the statistical distribution of capsule location across 10 participants over 60 minutes, shifting from the stomach (proximal) to the ileum (distal). Panel D displays clinical diagnostic images consisting of serial abdominal X-rays from three participants. These radiographic images track a radiopaque capsule's transit over 60 minutes in the supine position. The top row illustrates a slow transit from the fundus to the duodenum; the middle row shows movement from the antrum to the jejunum; and the bottom row demonstrates rapid transit reaching the ileum by 60 minutes. The content illustrates gastroduodenal motility and the use of ingestible capsules for studying gastrointestinal physiology and interoception.

This diagnostic image is a contrast-enhanced fluoroscopic radiograph (barium or gastrografin swallow) of the upper alimentary tract. The study demonstrates a massive diaphragmatic hernia, characterized by the abnormal displacement of the stomach into the thoracic cavity. The esophagus is visible as a narrow, contrast-filled tube descending towards the herniated stomach, which appears as a large, globular, opacified structure located above the expected level of the diaphragm in the left hemithorax. An air-fluid level is visible within the stomach, indicating the presence of both gas and liquid contrast. Distal to the stomach, the pylorus and duodenum can be traced back through the diaphragmatic hiatus toward the abdominal cavity, where contrast-filled loops of small intestine (jejunum and ileum) are visible with their characteristic mucosal patterns. This image illustrates a severe disruption of normal thoracoabdominal anatomy, typical of a large hiatal or traumatic diaphragmatic hernia requiring surgical intervention.

This diagnostic image is a contrast-enhanced fluoroscopic radiograph (barium or gastrografin swallow) of the upper alimentary tract. The study demonstrates a massive diaphragmatic hernia, characterized by the abnormal displacement of the stomach into the thoracic cavity. The esophagus is visible as a narrow, contrast-filled tube descending towards the herniated stomach, which appears as a large, globular, opacified structure located above the expected level of the diaphragm in the left hemithorax. An air-fluid level is visible within the stomach, indicating the presence of both gas and liquid contrast. Distal to the stomach, the pylorus and duodenum can be traced back through the diaphragmatic hiatus toward the abdominal cavity, where contrast-filled loops of small intestine (jejunum and ileum) are visible with their characteristic mucosal patterns. This image illustrates a severe disruption of normal thoracoabdominal anatomy, typical of a large hiatal or traumatic diaphragmatic hernia requiring surgical intervention.

Searching Images

inguinal hernia direct indirect anatomy cadaver

Running Command

mkdir -p /tmp/workspace/anatomy-prelims && ls /tmp/workspace/anatomy-prelims/

Running Command

cat << 'PYEOF' > /tmp/workspace/anatomy-prelims/build_pdf.py import urllib.request import os, io, textwrap from reportlab.lib.pagesizes import A4 from reportlab.lib.styles import getSampleStyleSheet, ParagraphStyle from reportlab.lib.units import cm from reportlab.lib import colors from reportlab.platypus import (SimpleDocTemplate, Paragraph, Spacer, Table, TableStyle, Image as RLImage, PageBreak, HRFlowable, KeepTogether) from reportlab.platypus.tableofcontents import TableOfContents from reportlab.lib.enums import TA_CENTER, TA_LEFT, TA_JUSTIFY from PIL import Image as PILImage # ── helpers ────────────────────────────────────────────────────────────────── OUT_DIR = "/tmp/workspace/anatomy-prelims" IMG_DIR = os.path.join(OUT_DIR, "img_cache") os.makedirs(IMG_DIR, exist_ok=True) def fetch_image(url, name): path = os.path.join(IMG_DIR, name) if not os.path.exists(path): try: req = urllib.request.Request(url, headers={"User-Agent": "Mozilla/5.0"}) with urllib.request.urlopen(req, timeout=15) as r: data = r.read() with open(path, "wb") as f: f.write(data) except Exception as e: print(f" WARNING: could not fetch {url}: {e}") return None return path if os.path.exists(path) else None def make_image_flowable(url, name, width_cm=14, caption=""): path = fetch_image(url, name) if not path: return [] try: img = PILImage.open(path) iw, ih = img.size target_w = width_cm * cm target_h = target_w * ih / iw if target_h > 10 * cm: # cap height target_h = 10 * cm target_w = target_h * iw / ih items = [RLImage(path, width=target_w, height=target_h)] if caption: items.append(Paragraph(f"<i>{caption}</i>", caption_style)) items.append(Spacer(1, 0.3*cm)) return items except Exception as e: print(f" WARNING: image render failed for {path}: {e}") return [] # ── styles ──────────────────────────────────────────────────────────────────── styles = getSampleStyleSheet() title_style = ParagraphStyle("TitleMain", parent=styles["Title"], fontSize=20, textColor=colors.HexColor("#1a3a5c"), spaceAfter=6, alignment=TA_CENTER) subtitle_style = ParagraphStyle("Subtitle", parent=styles["Normal"], fontSize=11, textColor=colors.HexColor("#5a7fa0"), spaceAfter=16, alignment=TA_CENTER, fontName="Helvetica-Oblique") h1_style = ParagraphStyle("H1", parent=styles["Heading1"], fontSize=14, textColor=colors.white, backColor=colors.HexColor("#1a3a5c"), spaceAfter=6, spaceBefore=12, leftIndent=-6, rightIndent=-6, borderPad=4, leading=18) h2_style = ParagraphStyle("H2", parent=styles["Heading2"], fontSize=12, textColor=colors.HexColor("#1a3a5c"), spaceAfter=4, spaceBefore=8, borderPad=2, borderColor=colors.HexColor("#1a3a5c"), borderWidth=0) h3_style = ParagraphStyle("H3", parent=styles["Heading3"], fontSize=10, textColor=colors.HexColor("#2e6da4"), spaceAfter=2, spaceBefore=6, fontName="Helvetica-Bold") body_style = ParagraphStyle("Body", parent=styles["Normal"], fontSize=9, leading=13, spaceAfter=3, alignment=TA_JUSTIFY) bullet_style = ParagraphStyle("Bullet", parent=styles["Normal"], fontSize=9, leading=13, spaceAfter=2, leftIndent=14, bulletIndent=4) note_style = ParagraphStyle("Note", parent=styles["Normal"], fontSize=8.5, leading=12, backColor=colors.HexColor("#fffbe6"), borderColor=colors.HexColor("#f0c040"), borderWidth=0.5, borderPad=5, textColor=colors.HexColor("#5a4000"), spaceAfter=6, spaceBefore=4) caption_style = ParagraphStyle("Caption", parent=styles["Normal"], fontSize=8, textColor=colors.HexColor("#555555"), alignment=TA_CENTER, spaceAfter=4, fontName="Helvetica-Oblique") clinical_style = ParagraphStyle("Clinical", parent=styles["Normal"], fontSize=9, leading=13, backColor=colors.HexColor("#e8f4fd"), borderColor=colors.HexColor("#2e6da4"), borderWidth=0.5, borderPad=5, spaceAfter=6, spaceBefore=4) def B(text): return f"<b>{text}</b>" def I(text): return f"<i>{text}</i>" def bi(t): return f"<b><i>{t}</i></b>" def bullet(text): return Paragraph(f"• {text}", bullet_style) def subbullet(text): s = ParagraphStyle("Sub", parent=bullet_style, leftIndent=26) return Paragraph(f"- {text}", s) def clinical_box(text): return Paragraph(f"🩺 {text}", clinical_style) def note_box(text): return Paragraph(f"📝 {text}", note_style) def make_table(headers, rows, col_widths=None): data = [headers] + rows style = TableStyle([ ("BACKGROUND", (0,0), (-1,0), colors.HexColor("#1a3a5c")), ("TEXTCOLOR", (0,0), (-1,0), colors.white), ("FONTNAME", (0,0), (-1,0), "Helvetica-Bold"), ("FONTSIZE", (0,0), (-1,0), 9), ("FONTSIZE", (0,1), (-1,-1), 8.5), ("ROWBACKGROUNDS", (0,1), (-1,-1), [colors.white, colors.HexColor("#eaf3fc")]), ("GRID", (0,0), (-1,-1), 0.4, colors.HexColor("#b0c8e0")), ("VALIGN", (0,0), (-1,-1), "MIDDLE"), ("LEFTPADDING",(0,0), (-1,-1), 5), ("RIGHTPADDING",(0,0),(-1,-1), 5), ("TOPPADDING", (0,0), (-1,-1), 4), ("BOTTOMPADDING",(0,0),(-1,-1), 4), ("WORDWRAP", (0,0), (-1,-1), True), ]) t = Table(data, colWidths=col_widths, repeatRows=1) t.setStyle(style) return t # ── image URLs ──────────────────────────────────────────────────────────────── IMG = { "celiac_cadaver": "https://cdn.orris.care/cdss_images/pmc_clinical_VQA_37028f104f921b85b92e8c0ca3f3f19f584e761ada416be00b96009ed0c6f2cb.jpg", "celiac_angio": "https://cdn.orris.care/cdss_images/pmc_clinical_VQA_0eacc93819dd9bc3dec4bc9f2dcdf3360b2bd8d3c233e8d060e3480774bbce7c.jpg", "retro_cadaver": "https://cdn.orris.care/cdss_images/pmc_clinical_VQA_41f1b7af601c6790534bbad41bf78cb27c8b6496e064f19352e9365cdc7dc5f6.jpg", "iliac_cadaver": "https://cdn.orris.care/cdss_images/pmc_clinical_VQA_3c02e920d92f0d2d449bbd2d9c87163f30f8578e6af7ee2390da9dda5ec346e7.jpg", "bile_duct": "https://cdn.orris.care/cdss_images/pmc_clinical_VQA_576b36b16501d41b2255942c82cdadcb4d5bc765a72d38b2805a5e87f94c3786.jpg", "mrcp": "https://cdn.orris.care/cdss_images/pmc_clinical_VQA_373efe6dfa404aed83ac0e9444928bff565847ed7d4210ab1c1ea75e74c84cb2.jpg", "pelvis_ct": "https://cdn.orris.care/cdss_images/pmc_clinical_VQA_6db16901ba204e2fe4ed5b0c4b2663e953e344a76948d9d6d32ef41d92013cf6.jpg", "bladder_mri": "https://cdn.orris.care/cdss_images/pmc_clinical_VQA_0fe7390b875aa43fb9aec52a1970e42750d044d6d3265d22970b2ada8295c9f8.jpg", "gi_transit": "https://cdn.orris.care/cdss_images/pmc_clinical_VQA_591dd21f5292cec45f8e5962ed5f80097698cb0de5c9ba10188ba7af5ef66f0e.jpg", # textbook diagrams from Gray's "inguinal_diag": "https://cdn.orris.care/cdss_images/98ec6b7670bd9a2245a55c4128de139ea1e463497ff5c2e133ec9fb0659c7f5a.png", "deep_ring": "https://cdn.orris.care/cdss_images/a8be295d6de2a6f38485d1031bc156ac702af258bdad6e70e294888d295c83d1.png", "peritoneum_wall":"https://cdn.orris.care/cdss_images/0a48dd7bccab1d2b9f77eeb7c99fb63c4a877c9d9488754fc0ecdc117fbc7532.png", "extra_fascia": "https://cdn.orris.care/cdss_images/b7f95eb258a0760d0aa47a9ebcd7df42875cff6a4406bb1f19de83fbfca20ab0.png", "abdo_innervation":"https://cdn.orris.care/cdss_images/bef0423d931da7ba1598b1763e7920c78e2b598fdceca994627b1038c2d95656.png", "superficial_ring":"https://cdn.orris.care/cdss_images/04d2f79a4673a1735a21fcc12d047f985c84b8a7ddb2c811adc16c30360693ba.png", } # ── pre-fetch all images ────────────────────────────────────────────────────── print("Pre-fetching images...") for k, url in IMG.items(): r = fetch_image(url, f"{k}.img") print(f" {k}: {'OK' if r else 'FAILED'}") print("Building PDF...") # ── document ────────────────────────────────────────────────────────────────── doc = SimpleDocTemplate( os.path.join(OUT_DIR, "Gross_Anatomy_Prelims_Notes.pdf"), pagesize=A4, leftMargin=2*cm, rightMargin=2*cm, topMargin=2*cm, bottomMargin=2*cm, title="Gross Anatomy Prelims High-Yield Notes", author="Orris Medical AI" ) story = [] # ── COVER PAGE ──────────────────────────────────────────────────────────────── story.append(Spacer(1, 2*cm)) story.append(Paragraph("GROSS ANATOMY", title_style)) story.append(Paragraph("Prelims High-Yield Notes", title_style)) story.append(Spacer(1, 0.4*cm)) story.append(Paragraph("Abdomen · Pelvis · Perineum", subtitle_style)) story.append(Paragraph("Based on Snell's Clinical Anatomy | Gray's Anatomy for Students", subtitle_style)) story.append(HRFlowable(width="100%", thickness=2, color=colors.HexColor("#1a3a5c"))) story.append(Spacer(1, 0.5*cm)) # cover cadaver image cover_items = make_image_flowable(IMG["celiac_cadaver"], "celiac_cadaver.img", 13, "Cadaver dissection - Celiac trunk and its branches (1=celiac trunk, 2=common hepatic, 3=splenic, 4=left gastric, 9=spleen, 10=pancreas, 11=liver)") for i in cover_items: story.append(i) story.append(Spacer(1, 0.5*cm)) story.append(Paragraph("Topics Covered:", h2_style)) for t in ["1. Anterior Abdominal Wall — Inguinal Canal, Rings, Spermatic Cord, Scrotum", "2. Abdominal Cavity — Embryology, General Arrangement, Peritoneum", "3. GIT Arrangement — Celiac A., Liver, Pancreas, Spleen, Gallbladder, SMA", "4. Esophagus, Stomach, Small Intestine, Large Intestine", "5. Accessory GIT Organs — Liver, Gallbladder, Pancreas, Spleen", "6-7. Retroperitoneal Space — Kidneys, Ureters, Suprarenal, Posterior Wall, Aorta, IVC", "8. Imaging of the Abdomen", "9-12. Pelvis — Pelvic Bones, Pelvic Wall, Gluteal Region", "10-11. Male Pelvis", "13. Female Pelvic Wall & Cavity"]: story.append(bullet(t)) story.append(PageBreak()) # ═══════════════════════════════════════════════════════════════════════════════ # TOPIC 1 # ═══════════════════════════════════════════════════════════════════════════════ story.append(Paragraph("TOPIC 1 — Anterior Abdominal Wall · Inguinal Canal · Spermatic Cord · Scrotum", h1_style)) story.append(Spacer(1, 0.2*cm)) story.append(Paragraph("Layers of the Anterior Abdominal Wall (superficial → deep)", h2_style)) layers = [["Layer", "Key Notes"], ["1. Skin", ""], ["2. Superficial Fascia", "Camper's (fatty) + Scarpa's (membranous)"], ["3. External Oblique", "Aponeurosis forms superficial ring & inguinal ligament"], ["4. Internal Oblique", "Forms conjoint tendon with transversus; contributes cremaster"], ["5. Transversus Abdominis", "Deepest muscle; contributes conjoint tendon"], ["6. Transversalis Fascia", "Forms internal spermatic fascia at deep ring"], ["7. Extraperitoneal Fat", "Preperitoneal & retroperitoneal subdivisions"], ["8. Parietal Peritoneum", "Somatic innervation → well-localized pain"]] story.append(make_table(layers[0], layers[1:], [4*cm, 12*cm])) story.append(Spacer(1, 0.3*cm)) # Textbook diagrams story += make_image_flowable(IMG["peritoneum_wall"], "peritoneum_wall.img", 12, "Fig. — Transverse section showing layers of the abdominal wall (Gray's Anatomy for Students)") story += make_image_flowable(IMG["abdo_innervation"], "abdo_innervation.img", 12, "Fig. — Innervation of the anterolateral abdominal wall (T7-T12, L1)") story += make_image_flowable(IMG["extra_fascia"], "extra_fascia.img", 10, "Fig. — Subdivisions of the Extraperitoneal Fascia") story.append(Paragraph("Inguinal Canal", h2_style)) story.append(Paragraph( "Oblique passage <b>~4 cm long</b>, running from the deep ring supero-laterally to the superficial ring infero-medially, " "parallel to and just above the inguinal ligament.", body_style)) story.append(Spacer(1,0.15*cm)) walls = [["Wall", "Structure"], ["Anterior", "Aponeurosis of external oblique (whole length) + internal oblique (laterally)"], ["Posterior", "Transversalis fascia (whole length) + conjoint tendon (medially)"], ["Roof", "Arching fibers of internal oblique + transversus abdominis"], ["Floor", "Inguinal ligament (medial half) + lacunar ligament (medially)"]] story.append(make_table(walls[0], walls[1:], [3*cm, 13*cm])) story.append(Spacer(1,0.3*cm)) story += make_image_flowable(IMG["inguinal_diag"], "inguinal_diag.img", 13, "Fig. 4.42 — Inguinal Canal (Gray's Anatomy for Students)") story.append(Paragraph("Inguinal Rings", h2_style)) story.append(Paragraph(B("Deep (Internal) Inguinal Ring:"), body_style)) for t in ["Opening in transversalis fascia (not a true hole — a tubular evagination)", "Located midway between ASIS and pubic symphysis, just above inguinal ligament", "Lateral to inferior epigastric vessels", "Gives rise to the internal spermatic fascia"]: story.append(bullet(t)) story += make_image_flowable(IMG["deep_ring"], "deep_ring.img", 12, "Fig. 4.43 — Deep Inguinal Ring and Transversalis Fascia (Gray's Anatomy for Students)") story.append(Paragraph(B("Superficial (External) Inguinal Ring:"), body_style)) for t in ["Triangular defect in aponeurosis of external oblique", "Located superior to pubic tubercle", "Gives rise to external spermatic fascia"]: story.append(bullet(t)) story += make_image_flowable(IMG["superficial_ring"], "superficial_ring.img", 12, "Fig. 4.44 — Superficial Inguinal Ring and Aponeurosis of External Oblique") story.append(clinical_box( "CLINICAL: Hesselbach's Triangle = lateral border of rectus + inferior epigastric vessels + inguinal ligament. " "Direct hernia = medial to inferior epigastric (through Hesselbach's). " "Indirect hernia = lateral to inferior epigastric (through deep ring). Mnemonic: MD = Medial Direct")) story.append(Paragraph("Spermatic Cord — Contents", h2_style)) cord_data = [["Category", "Structures"], ["3 Arteries", "Testicular (from aorta L2) · Cremasteric (from inf. epigastric) · Artery to vas (from inf. vesical)"], ["3 Nerves", "Genital br. of genitofemoral (cremaster) · Sympathetic fibers · Ilioinguinal (outside cord in canal)"], ["3 Others", "Vas deferens · Pampiniform plexus · Lymphatics"]] story.append(make_table(cord_data[0], cord_data[1:], [4*cm, 12*cm])) story.append(Spacer(1,0.2*cm)) story.append(Paragraph(B("3 Fascial Coverings (inside → out):"), body_style)) for t in ["Internal spermatic fascia ← transversalis fascia (at deep ring)", "Cremasteric fascia & muscle ← internal oblique", "External spermatic fascia ← external oblique aponeurosis (at superficial ring)"]: story.append(bullet(t)) story.append(Paragraph("Scrotum", h2_style)) for t in ["Dartos muscle (smooth) → wrinkling in cold; no fat in dartos layer", "Blood: anterior scrotal a. (femoral) + posterior scrotal a. (perineal a.)", "Lymphatics → INGUINAL nodes (not iliac)", "Testicular lymphatics → PARA-AORTIC nodes at L2 (embryological origin)"]: story.append(bullet(t)) story.append(note_box("Exam tip: Testicular vs scrotal lymphatics differ — a common MCQ!")) story.append(PageBreak()) # ═══════════════════════════════════════════════════════════════════════════════ # TOPIC 2 # ═══════════════════════════════════════════════════════════════════════════════ story.append(Paragraph("TOPIC 2 — Abdominal Cavity: Embryology · General Arrangement · Peritoneum", h1_style)) story.append(Spacer(1, 0.2*cm)) story.append(Paragraph("Gut Embryology — High-Yield", h2_style)) for t in ["4th week: Gut tube forms from endoderm (foregut / midgut / hindgut)", "Foregut → celiac artery supply | Midgut → SMA | Hindgut → IMA", "Week 6: Physiological herniation into umbilical cord; returns week 10", "Malrotation → volvulus; failure of return → omphalocele", "Gastroschisis: right of umbilicus, no covering membrane", "Omphalocele: covered by peritoneum/amniotic membrane", "Meckel's Diverticulum: Rule of 2's — 2%, 2 inches, 2 feet from ICV, 2 types of ectopic mucosa (gastric/pancreatic)"]: story.append(bullet(t)) story.append(Paragraph("Peritoneum", h2_style)) peritoneum_data = [["Type", "Location", "Innervation", "Pain Quality"], ["Parietal", "Lines abdominal walls", "Somatic (spinal nerves)", "Sharp, well-localized"], ["Visceral", "Covers organs", "Autonomic (vagal/sympathetic)", "Dull, poorly localized"]] story.append(make_table(peritoneum_data[0], peritoneum_data[1:], [3*cm, 5*cm, 5*cm, 4*cm])) story.append(Spacer(1,0.3*cm)) story.append(Paragraph(B("Key Peritoneal Structures:"), body_style)) for t in ["Greater omentum: from greater curvature of stomach; 'policeman of abdomen' — walls off infection", "Lesser omentum: liver to lesser curvature; free edge = hepatoduodenal ligament (portal triad)", "Epiploic foramen (of Winslow): entrance to lesser sac; anterior = hepatoduodenal lig, posterior = IVC, superior = caudate lobe, inferior = duodenum D1", "Lesser sac (omental bursa): posterior to stomach/lesser omentum"]: story.append(bullet(t)) story.append(Paragraph("Clinically Important Peritoneal Recesses", h3_style)) recesses = [["Recess", "Location", "Clinical Significance"], ["Morrison's pouch (hepatorenal)", "Between liver and right kidney", "Most dependent in supine; fluid collects here first"], ["Pouch of Douglas (rectouterine)", "Between uterus and rectum (female)", "Most dependent in erect female; ectopic pregnancy / pelvic abscess"], ["Rectovesical pouch", "Rectum–bladder (male)", "Fluid detection in male pelvis"], ["Paracolic gutters", "Lateral to ascending/descending colon", "Route of fluid spread between recesses"]] story.append(make_table(recesses[0], recesses[1:], [4.5*cm, 5*cm, 7*cm])) story.append(Spacer(1,0.3*cm)) story.append(Paragraph("Retroperitoneal Structures — Mnemonic: SAD PUCKER", h3_style)) for t in ["S — Suprarenal glands", "A — Aorta and IVC", "D — Duodenum (2nd–4th parts)", "P — Pancreas (except tail)", "U — Ureters", "C — Colon (ascending and descending)", "K — Kidneys", "E — Esophagus (lower)", "R — Rectum (lower 2/3)"]: story.append(bullet(t)) story.append(PageBreak()) # ═══════════════════════════════════════════════════════════════════════════════ # TOPIC 3 # ═══════════════════════════════════════════════════════════════════════════════ story.append(Paragraph("TOPIC 3 — GIT Arrangement: Celiac A. · SMA · IMA · Liver · Pancreas · Spleen · Gallbladder", h1_style)) story.append(Spacer(1,0.2*cm)) story.append(Paragraph("Celiac Trunk", h2_style)) story.append(Paragraph("Arises from aorta at <b>T12/L1</b> (just below aortic hiatus). Supplies foregut.", body_style)) story += make_image_flowable(IMG["celiac_cadaver"], "celiac_cadaver.img", 14, "Cadaver dissection — Celiac trunk (1) with: common hepatic artery (2), splenic artery (3), left gastric artery (4). Pancreas (10), liver (11), spleen (9) visible.") story += make_image_flowable(IMG["celiac_angio"], "celiac_angio.img", 14, "DSA angiography — Normal celiac trunk trifurcation. Left gastric, splenic, and common hepatic arteries identified. Gastroduodenal artery gives right gastroepiploic artery.") celiac_branches = [["Branch", "Origin", "Supply"], ["Left gastric", "Celiac trunk (smallest)", "Lower esophagus + lesser curvature"], ["Splenic", "Celiac trunk (largest)", "Spleen + pancreas body/tail + fundus (short gastrics)"], ["Common hepatic", "Celiac trunk", "Liver, gallbladder, stomach, duodenum, pancreas head"], ["Right gastric", "Proper hepatic a.", "Lesser curvature (right side)"], ["Right gastroepiploic", "Gastroduodenal a.", "Greater curvature (right)"], ["Left gastroepiploic", "Splenic a.", "Greater curvature (left)"]] story.append(make_table(celiac_branches[0], celiac_branches[1:], [4.5*cm, 5*cm, 7*cm])) story.append(Spacer(1,0.3*cm)) story.append(Paragraph("SMA — Superior Mesenteric Artery", h2_style)) for t in ["Arises at L1, behind neck of pancreas", "Supplies midgut: 2nd part of duodenum → left 2/3 of transverse colon", "Branches: inferior pancreaticoduodenal · intestinal (jejunal/ileal) · ileocolic · right colic · middle colic"]: story.append(bullet(t)) story.append(Paragraph("IMA — Inferior Mesenteric Artery", h2_style)) for t in ["Arises at L3", "Supplies hindgut: left 1/3 transverse colon → upper rectum", "Branches: left colic · sigmoid arteries · superior rectal artery", "Critical Point of Griffiths (splenic flexure) = watershed zone between SMA & IMA — vulnerable to ischemia"]: story.append(bullet(t)) story.append(Paragraph("Liver", h2_style)) liver_data = [["Feature", "Detail"], ["Weight", "~1.5 kg; largest abdominal organ"], ["Anatomical lobes", "Right (5x), Left, Caudate, Quadrate"], ["Functional division", "By Cantlie's line (gallbladder fossa → IVC) → right/left lobes"], ["Couinaud segments", "8 segments, each with portal triad + hepatic vein"], ["Blood supply", "Portal vein 75% (50% O2) + Hepatic artery 25% (50% O2)"], ["Bare area", "Not covered by peritoneum; bounded by coronary ligament; contacts diaphragm"], ["Lig. teres", "Obliterated left umbilical vein (in free edge of falciform ligament)"], ["Lig. venosum", "Obliterated ductus venosus (fissure on posterior surface)"], ["Porta hepatis", "Portal vein (post) · Hepatic artery (left) · Bile duct (right)"]] story.append(make_table(liver_data[0], liver_data[1:], [5*cm, 11*cm])) story.append(Spacer(1,0.3*cm)) story += make_image_flowable(IMG["bile_duct"], "bile_duct.img", 12, "Intraoperative cadaveric view — Common bile duct (CBD) in hepatoduodenal ligament. Liver (top), duodenum (bottom). Note: gallbladder absent (agenesis) in this specimen.") story += make_image_flowable(IMG["mrcp"], "mrcp.img", 11, "MRCP — Biliary tree anatomy showing common hepatic duct, common bile duct, gallbladder, and accessory bile duct variant. Critical for understanding biliary anatomy.") story.append(Paragraph("Gallbladder", h2_style)) for t in ["Parts: Fundus · Body · Neck (→ cystic duct with spiral valve of Heister)", "Hartmann's pouch — junction of neck and cystic duct; stones lodge here", "Calot's Triangle — bounded by: cystic duct + common hepatic duct + liver", "Cystic artery = branch of right hepatic artery (usually) — runs in Calot's triangle", "Referred pain = right shoulder tip (C3,C4 — diaphragmatic irritation)", "Murphy's sign = pain on inspiration when examiner presses under right costal margin"]: story.append(bullet(t)) story.append(Paragraph("Pancreas", h2_style)) panc_data = [["Part", "Relations", "Blood Supply"], ["Head", "In C-loop of duodenum; CBD runs in/behind", "Superior + Inferior pancreaticoduodenal arteries"], ["Neck", "Overlies portal vein/SMA junction", "Splenic a. branches"], ["Body", "Crosses L1-L2 vertebrae; behind stomach", "Splenic a. branches"], ["Tail", "Reaches splenic hilum; in splenorenal lig.", "Splenic a. (tail is INTRAperitoneal)"]] story.append(make_table(panc_data[0], panc_data[1:], [2.5*cm, 7.5*cm, 6*cm])) story.append(Spacer(1,0.2*cm)) story.append(clinical_box( "Cancer of HEAD = obstructive jaundice (blocks CBD). " "Cancer of BODY/TAIL = back pain (T10), late presentation. " "Annular pancreas = duodenal obstruction = double bubble sign on X-ray.")) story.append(Paragraph("Spleen", h2_style)) for t in ["Left hypochondrium; related to 9th, 10th, 11th ribs", "~150 g; notch on anterior border (distinguishes from kidney on palpation)", "Surfaces: diaphragmatic, renal, gastric, colic", "Gastrosplenic lig: short gastric + left gastroepiploic vessels", "Splenorenal lig: splenic vessels + tail of pancreas", "Accessory spleen in 10% (usually at hilum)", "Kehr's sign = left shoulder tip pain (diaphragm irritation from splenic rupture blood)"]: story.append(bullet(t)) story.append(PageBreak()) # ═══════════════════════════════════════════════════════════════════════════════ # TOPIC 4 # ═══════════════════════════════════════════════════════════════════════════════ story.append(Paragraph("TOPIC 4 — Esophagus · Stomach · Small Intestine · Large Intestine", h1_style)) story.append(Spacer(1,0.2*cm)) story.append(Paragraph("Abdominal Esophagus", h2_style)) for t in ["~2 cm long; enters through esophageal hiatus at T10 with vagal trunks", "Anterior vagal trunk (mainly left vagus) · Posterior vagal trunk (mainly right vagus)", "LES = physiological sphincter (not anatomical) — prevents reflux", "Blood: left gastric a. + left inferior phrenic a.", "Portal-systemic anastomosis here — VARICES in portal hypertension"]: story.append(bullet(t)) story.append(Paragraph("Stomach", h2_style)) story.append(Paragraph("Parts: Cardia → Fundus → Body → Pyloric antrum → Pyloric canal → Pylorus", body_style)) for t in ["Pyloric sphincter: palpable thickened ring; at L1 level (transpyloric plane)", "Transpyloric plane (L1): fundus of gallbladder · hilum of kidneys · SMA origin · termination of spinal cord (adults) · neck of pancreas", "Rugae = longitudinal folds of mucosa (allow distension)", "Pyloric stenosis (infantile hypertrophic): palpable 'olive' mass; projectile vomiting; hypochloremic hypokalemic metabolic alkalosis"]: story.append(bullet(t)) story.append(Paragraph(B("Blood Supply (all from celiac trunk):"), body_style)) for t in ["Lesser curvature: right + left gastric arteries", "Greater curvature: right + left gastroepiploic arteries", "Fundus: short gastric arteries (from splenic a.)", "Posterior wall: posterior gastric artery (from splenic a.)"]: story.append(bullet(t)) story.append(Paragraph("Duodenum", h2_style)) duo_data = [["Part", "Length", "Peritoneum", "Key Relations"], ["1st (Superior)", "5 cm", "Has peritoneum (first ~2 cm)", "Most common ulcer site; gallbladder above"], ["2nd (Descending)", "7.5 cm", "Retroperitoneal", "Major papilla (bile + pancreatic duct); minor papilla above"], ["3rd (Horizontal)", "10 cm", "Retroperitoneal", "Crossed by SMA/SMV + root of mesentery"], ["4th (Ascending)", "2.5 cm", "Retroperitoneal", "Becomes jejunum at duodenojejunal flexure (ligament of Treitz)"]] story.append(make_table(duo_data[0], duo_data[1:], [2.5*cm, 2*cm, 3.5*cm, 8*cm])) story.append(Spacer(1,0.2*cm)) story += make_image_flowable(IMG["gi_transit"], "gi_transit.img", 14, "GI transit diagram showing stomach (fundus, body, antrum) and small intestine (duodenum, jejunum, ileum) with X-ray tracking of capsule transit.") story.append(Paragraph("Jejunum vs. Ileum", h2_style)) ji_data = [["Feature", "Jejunum", "Ileum"], ["Location", "Upper left abdomen", "Lower right abdomen"], ["Wall", "Thicker", "Thinner, more transparent"], ["Plicae circulares", "Prominent, closely packed", "Few or absent distally"], ["Vasa recta", "Long", "Short"], ["Arterial arcades", "1-2 tiers (simple)", "4-5 tiers (complex)"], ["Peyer's patches", "Few", "Many (terminal ileum)"], ["Color", "Deeper red/pink", "Paler pink"], ["Fat in mesentery", "Less (windows visible)", "More (opaque)"]] story.append(make_table(ji_data[0], ji_data[1:], [5*cm, 6.5*cm, 6.5*cm])) story.append(Spacer(1,0.2*cm)) story.append(Paragraph("Large Intestine — Distinguishing Features", h2_style)) for t in ["Taenia coli = 3 longitudinal bands (converge at appendix base — surgical landmark)", "Haustra = sacculations between taenia", "Appendices epiploicae = fat-filled peritoneal tags", "Appendix base = confluence of taenia coli; McBurney's point = 1/3 from ASIS on spinoumbilical line", "Appendicular artery = end artery (from ileocolic) → gangrene in appendicitis", "Hepatic flexure: right, less acute | Splenic flexure: higher, more acute, more fixed", "Sigmoid colon = most mobile; has mesentery; common site of volvulus", "Rectum: Houston's valves (3) — 2 left, 1 right"]: story.append(bullet(t)) story.append(PageBreak()) # ═══════════════════════════════════════════════════════════════════════════════ # TOPICS 5 # ═══════════════════════════════════════════════════════════════════════════════ story.append(Paragraph("TOPIC 5 — Accessory GIT Organs: Additional High-Yield Points", h1_style)) story.append(Spacer(1,0.2*cm)) story.append(Paragraph("Biliary Tree", h2_style)) for t in ["Right + Left hepatic ducts → Common hepatic duct + Cystic duct → Common bile duct (CBD)", "CBD ~7-8 cm; runs in hepatoduodenal ligament → posterior to D1 → through/behind head of pancreas", "Joins pancreatic duct at Ampulla of Vater (major duodenal papilla, D2)", "Sphincter of Oddi controls flow into D2", "Normal CBD diameter < 8 mm on USS; > 10 mm if post-cholecystectomy"]: story.append(bullet(t)) story.append(Paragraph("Liver — Clinical Notes", h2_style)) for t in ["Liver biopsy: 8th-9th ICS, midaxillary line, right side, in full expiration", "3 hepatic veins drain into IVC just below diaphragm", "Child-Pugh score / MELD score for liver function assessment", "Portal-systemic anastomoses: lower esophagus · anal canal · paraumbilical · retroperitoneal"]: story.append(bullet(t)) story.append(Paragraph("Portal Vein", h2_style)) story.append(Paragraph( "Forms behind neck of pancreas at <b>L2</b> by union of SMV + Splenic vein. " "Drains gut, spleen, pancreas, gallbladder. Portal hypertension > 10-12 mmHg.", body_style)) story.append(PageBreak()) # ═══════════════════════════════════════════════════════════════════════════════ # TOPIC 6 & 7 # ═══════════════════════════════════════════════════════════════════════════════ story.append(Paragraph("TOPICS 6 & 7 — Retroperitoneal Space · Kidneys · Ureters · Suprarenal · Posterior Wall · Aorta · IVC · Lumbar Plexus", h1_style)) story.append(Spacer(1,0.2*cm)) story.append(Paragraph("Kidneys", h2_style)) kidney_data = [["Feature", "Right Kidney", "Left Kidney"], ["Level", "T12-L3 (slightly lower)", "T12-L3"], ["Anterior", "Liver · D2 · Ascending colon · Hepatic flexure", "Stomach · Spleen · Pancreas tail · Jejunum · Splenic flexure"], ["Posterior", "Diaphragm · Psoas · QL · 12th rib", "Diaphragm · Psoas · QL · 11th & 12th ribs"], ["Hilum order (ant→post)", "Vein · Artery · Ureter/Pelvis (VAP)", "Vein · Artery · Ureter/Pelvis (VAP)"]] story.append(make_table(kidney_data[0], kidney_data[1:], [4*cm, 7*cm, 7*cm])) story.append(Spacer(1,0.3*cm)) story += make_image_flowable(IMG["retro_cadaver"], "retro_cadaver.img", 14, "Cadaver dissection — Posterior abdominal wall showing left testicular vein (LTV), left renal vein (LRV), IVC, abdominal aorta (AA), left kidney (LK), pancreas (PAN), and left ureter (LU). Key landmarks for retroperitoneal anatomy.") story += make_image_flowable(IMG["iliac_cadaver"], "iliac_cadaver.img", 14, "Cadaver dissection — Posterior wall and pelvic vasculature. Right common iliac artery crossing anteriorly over IVC. Right kidney, right ureter, external and internal iliac arteries visible.") story.append(Paragraph("Ureters — 3 Points of Narrowing (stones lodge here)", h2_style)) ureter_data = [["Site", "Location", "Clinical"], ["1. Pelviureteric junction (PUJ)", "Renal pelvis → ureter", "Most common site of congenital obstruction"], ["2. Pelvic brim", "Crossing common iliac artery bifurcation", "At sacroiliac joint level"], ["3. Vesicoureteric junction (VUJ)", "Entry into bladder wall", "Narrowest point; most common stone lodgement"]] story.append(make_table(ureter_data[0], ureter_data[1:], [5.5*cm, 5.5*cm, 6*cm])) story.append(clinical_box( "Female urology key: Uterine artery crosses OVER ureter 2 cm lateral to cervix at level of internal os — " "'Water under the bridge'. Risk of ureteric ligation/transection in hysterectomy.")) story.append(Paragraph("Suprarenal (Adrenal) Glands", h2_style)) for t in ["Within Gerota's fascia, cap upper poles of kidneys", "Right = pyramidal; behind IVC, medial to liver", "Left = semilunar; behind stomach/pancreas, near splenic vessels", "Blood supply: 3 arteries — superior (inf. phrenic) · middle (aorta) · inferior (renal a.)", "Venous drainage: RIGHT vein → directly to IVC (short — important in surgery!) | LEFT vein → left renal vein"]: story.append(bullet(t)) story.append(Paragraph("Abdominal Aorta — Branch Levels", h2_style)) aorta_data = [["Branch", "Level"], ["Inferior phrenic arteries", "T12"], ["Celiac trunk", "T12/L1"], ["Superior mesenteric a. (SMA)", "L1"], ["Middle suprarenal arteries", "L1"], ["Renal arteries", "L1-L2"], ["Gonadal (testicular/ovarian) arteries", "L2"], ["Inferior mesenteric a. (IMA)", "L3"], ["Common iliac arteries (bifurcation)", "L4"], ["Median sacral artery", "L4"]] story.append(make_table(aorta_data[0], aorta_data[1:], [10*cm, 6*cm])) story.append(Spacer(1,0.2*cm)) story.append(note_box("Aortic aneurysm = usually infrarenal (below renal arteries); pulsatile mass at umbilicus; diameter > 3 cm")) story.append(Paragraph("IVC", h2_style)) for t in ["Begins at L5 (right of aorta) by union of common iliac veins", "Passes through caval opening in diaphragm at T8", "NO gut tributaries — all gut blood goes via portal system to liver first", "Tributaries: lumbar veins · renal veins · gonadal veins · hepatic veins · inferior phrenics"]: story.append(bullet(t)) story.append(Paragraph("Lumbar Plexus — Inside Psoas Major", h2_style)) lumboplexus_data = [["Nerve", "Root", "Key Points"], ["Iliohypogastric", "L1 (T12)", "Skin of lower abdomen + gluteal region"], ["Ilioinguinal", "L1", "Passes through inguinal canal; scrotum/labium majus + medial thigh"], ["Genitofemoral", "L1, L2", "Exits through psoas; genital br (cremaster) + femoral br (anterior thigh)"], ["Lat. cutaneous nerve of thigh", "L2, L3", "Exits lateral to psoas; under inguinal lig; meralgia paresthetica if compressed"], ["Obturator", "L2, L3, L4", "Exits medial border of psoas; through obturator foramen; adductors"], ["Femoral", "L2, L3, L4", "Exits lateral to psoas; under inguinal lig lateral to femoral a.; extensors"]] story.append(make_table(lumboplexus_data[0], lumboplexus_data[1:], [5.5*cm, 2.5*cm, 9*cm])) story.append(PageBreak()) # ═══════════════════════════════════════════════════════════════════════════════ # TOPIC 8 # ═══════════════════════════════════════════════════════════════════════════════ story.append(Paragraph("TOPIC 8 — Imaging of the Abdomen", h1_style)) story.append(Spacer(1,0.2*cm)) imaging_data = [["Modality", "Best For", "Key Points"], ["Plain X-ray (AXR)", "Obstruction · Perforation · Calcification", "SBO: central, valvulae conniventes. LBO: peripheral, haustra. Pneumoperitoneum: air under diaphragm on erect CXR"], ["Ultrasound (USG)", "Gallstones · Liver · Kidney · Ascites · Aorta", "Murphy's sign on probe. CBD < 8 mm. Aorta > 3 cm = aneurysm. 90% renal stones echogenic. Gallstones >95% sensitive"], ["CT Abdomen", "Acute abdomen · Trauma · Cancer staging", "Gold standard for acute abdomen. Balthazar score for pancreatitis. Detect retroperitoneal structures well"], ["MRI / MRCP", "Liver lesions · Biliary tree · Soft tissue", "Non-invasive alternative to ERCP for biliary diagnosis. No radiation. Best soft tissue contrast"]] story.append(make_table(imaging_data[0], imaging_data[1:], [3.5*cm, 5.5*cm, 8*cm])) story.append(Spacer(1,0.3*cm)) story.append(note_box( "High-yield imaging facts: 90% of renal stones radio-opaque (calcium oxalate). " "Only 10% gallstones radio-opaque. Portal vein > 13 mm on USS = portal hypertension.")) story.append(PageBreak()) # ═══════════════════════════════════════════════════════════════════════════════ # TOPICS 9, 10, 12 # ═══════════════════════════════════════════════════════════════════════════════ story.append(Paragraph("TOPICS 9, 10, 12 — Pelvic Bones · Pelvic Wall · Gluteal Region", h1_style)) story.append(Spacer(1,0.2*cm)) story.append(Paragraph("Bony Pelvis", h2_style)) for t in ["Hip bone = ilium + ischium + pubis (fuse at triradiate cartilage at 14-16 years)", "Joints: pubic symphysis (secondary cartilaginous) · sacroiliac (synovial anteriorly + syndesmosis posteriorly)", "Female pelvis: wider, shallower, larger inlet, more circular, pubic angle > 90°", "Pelvic inlet (brim): pubic symphysis → iliopectineal line → sacral promontory"]: story.append(bullet(t)) story.append(Paragraph("True vs. False Pelvis", h2_style)) pelvis_data = [["", "False Pelvis", "True Pelvis"], ["Location", "Above pelvic brim", "Below pelvic brim"], ["Bounded by", "Iliac fossae laterally", "Pubis, ischium, sacrum"], ["Contents", "Lower abdominal organs", "Bladder, rectum, reproductive organs"]] story.append(make_table(pelvis_data[0], pelvis_data[1:], [4*cm, 7*cm, 7*cm])) story.append(Spacer(1,0.2*cm)) story.append(Paragraph("Obstetric Diameters", h2_style)) ob_data = [["Diameter", "Measurement", "Landmarks"], ["True conjugate (anatomical)", "11 cm", "Sacral promontory → upper pubic symphysis"], ["Obstetric conjugate", "10 cm", "Sacral promontory → most prominent point of pubis"], ["Diagonal conjugate", "12.5 cm", "Sacral promontory → lower pubic symphysis"], ["Transverse diameter of inlet", "13 cm", "Widest transverse diameter"]] story.append(make_table(ob_data[0], ob_data[1:], [5.5*cm, 3*cm, 8.5*cm])) story.append(Spacer(1,0.2*cm)) story.append(Paragraph("Caldwell-Moloy Pelvic Types", h2_style)) ct_data = [["Type", "Shape", "Frequency", "Delivery"], ["Gynecoid", "Round / oval", "50%", "Most favorable"], ["Android", "Heart-shaped (male)", "20%", "Unfavorable (deep transverse arrest)"], ["Anthropoid", "Oval (AP > transverse)", "25%", "Possible; occiput posterior common"], ["Platypelloid", "Flat (transverse > AP)", "5%", "Difficult; flat inlet"]] story.append(make_table(ct_data[0], ct_data[1:], [3.5*cm, 4*cm, 3*cm, 7*cm])) story.append(Spacer(1,0.2*cm)) story.append(Paragraph("Pelvic Muscles", h2_style)) pm_data = [["Muscle", "Origin", "Insertion", "Nerve", "Action"], ["Piriformis", "Sacrum (S2-S4)", "Greater trochanter", "S1, S2", "Lateral rotation of hip"], ["Obturator internus", "Obturator membrane", "Greater trochanter (medial)", "Nerve to OI (L5, S1)", "Lateral rotation"], ["Levator ani", "Pubis · Tendinous arch · Ischial spine", "Perineal body · Coccyx · Anococcygeal body", "S4 + pudendal", "Pelvic floor support"], ["Coccygeus", "Ischial spine", "Sacrum/coccyx", "S4, S5", "Supports pelvic floor"]] story.append(make_table(pm_data[0], pm_data[1:], [3.5*cm, 4*cm, 4*cm, 2.8*cm, 3.2*cm])) story.append(Spacer(1,0.2*cm)) story.append(Paragraph("Pelvic Diaphragm & Levator Ani", h2_style)) for t in ["Pelvic diaphragm = levator ani + coccygeus", "Levator ani = pubococcygeus + iliococcygeus + puborectalis", "Puborectalis forms sling around anorectal junction → maintains anorectal angle ~90° (essential for continence)", "Urogenital hiatus: transmits urethra (+ vagina in females)", "Pelvic floor weakness → prolapse + stress incontinence"]: story.append(bullet(t)) story.append(Paragraph("Gluteal Region — Key Nerve Relationships", h2_style)) story.append(Paragraph("<b>Piriformis muscle</b> is the landmark — everything is above or below it:", body_style)) glut_data = [["Relation to Piriformis", "Structures"], ["Above (via greater sciatic foramen)", "Superior gluteal vessels + nerve (L4, L5, S1)"], ["Below (via greater sciatic foramen)", "Inferior gluteal n/v · Sciatic nerve (L4-S3) · Pudendal nerve · Nerve to obturator internus · Nerve to quadratus femoris · Posterior cutaneous nerve of thigh"]] story.append(make_table(glut_data[0], glut_data[1:], [6.5*cm, 11*cm])) story.append(Spacer(1,0.2*cm)) story.append(clinical_box( "Safe injection zone: Upper outer quadrant of gluteal region (avoids sciatic nerve). " "Sciatic nerve: midpoint between ASIS and ischial tuberosity. " "Trendelenburg sign = gluteus medius weakness = superior gluteal nerve (L4, L5) lesion.")) story.append(PageBreak()) # ═══════════════════════════════════════════════════════════════════════════════ # TOPIC 11 # ═══════════════════════════════════════════════════════════════════════════════ story.append(Paragraph("TOPIC 11 — Male Pelvis", h1_style)) story.append(Spacer(1,0.2*cm)) story.append(Paragraph("Prostate", h2_style)) story += make_image_flowable(IMG["bladder_mri"], "bladder_mri.img", 13, "MRI pelvis (male) — Sagittal (A) and axial (B) views showing bladder, prostate gland (inferior to bladder), pubic symphysis, sacrum, and rectum. Essential for understanding male pelvic organ relationships.") for t in ["Walnut-sized gland surrounding urethra below bladder neck", "Zones: Peripheral (most cancer) · Central · Transitional (BPH) · Anterior", "Blood: inferior vesical + middle rectal arteries", "Venous drainage: Prostatic plexus (Santorini's) → internal iliac; communicates with Batson's vertebral plexus", "Prostate cancer → osteosclerotic metastases to vertebrae (via Batson's plexus)", "DRE: posterior surface palpable; median sulcus; loss of sulcus + nodularity = cancer", "PSA: > 4 ng/mL suspicious | > 10 ng/mL highly suspicious"]: story.append(bullet(t)) story.append(Paragraph("Seminal Vesicles", h2_style)) for t in ["Posterior to bladder, above prostate", "Duct + vas deferens → ejaculatory duct → opens at verumontanum in prostatic urethra", "Contribute ~60% of seminal fluid (fructose + prostaglandins + coagulase)"]: story.append(bullet(t)) story.append(Paragraph("Urinary Bladder", h2_style)) for t in ["Trigone: smooth, no rugae; bounded by 2 ureteric orifices + internal urethral orifice; most common site of bladder carcinoma", "Detrusor (smooth) · Internal sphincter (smooth, involuntary) · External sphincter (skeletal, voluntary)", "Blood: superior + inferior vesical arteries (from internal iliac)"]: story.append(bullet(t)) story.append(Paragraph("Male Urethra (Total ~20 cm)", h2_style)) mu_data = [["Part", "Length", "Key Features"], ["Prostatic", "~3 cm", "Widest; verumontanum · utricle · ejaculatory duct openings"], ["Membranous", "~2 cm", "External sphincter here; most fixed; most vulnerable in pelvic fracture"], ["Spongy/Penile", "~15 cm", "Through corpus spongiosum; narrowest = external urethral meatus"]] story.append(make_table(mu_data[0], mu_data[1:], [3*cm, 2.5*cm, 11.5*cm])) story.append(PageBreak()) # ═══════════════════════════════════════════════════════════════════════════════ # TOPIC 13 # ═══════════════════════════════════════════════════════════════════════════════ story.append(Paragraph("TOPIC 13 — Female Pelvic Wall & Cavity", h1_style)) story.append(Spacer(1,0.2*cm)) story += make_image_flowable(IMG["pelvis_ct"], "pelvis_ct.img", 14, "CT pelvis (female) — Axial (A) and sagittal (B) views. Sigmoid colon herniation between uterus (U) and ovary (O). Sacrum, lumbar spine, bladder identified. Demonstrates female pelvic organ relationships.") story.append(Paragraph("Uterus", h2_style)) for t in ["Size: 7.5 × 5 × 2.5 cm; pear-shaped", "Normal position: anteverted (90° to vagina) + anteflexed (120° at isthmus) — most important exam fact", "Parts: Fundus · Body · Isthmus (lower uterine segment) · Cervix", "Cervix: external os (stratified squamous) + internal os; transformation zone = most common site of cervical cancer (HPV 16, 18)"]: story.append(bullet(t)) story.append(Paragraph("Uterine Supports", h2_style)) uterus_support_data = [["Ligament", "Type", "Function", "Contents"], ["Cardinal (Mackenrodt's/transverse cervical)", "Condensed pelvic fascia", "PRIMARY ligamentous support; prevents prolapse", "Uterine artery; ureter crosses below"], ["Uterosacral", "Peritoneal fold", "Posterior support; maintains anteversion", "Sympathetic nerves"], ["Round ligament", "Smooth muscle + fibrous", "Keeps fundus anteverted (weak support)", "Passes through inguinal canal"], ["Pubocervical", "Fascia", "Anterior support; bladder support", "—"], ["Levator ani (pelvic floor)", "Skeletal muscle", "PRIMARY muscular support", "—"]] story.append(make_table(uterus_support_data[0], uterus_support_data[1:], [4*cm, 3.5*cm, 4.5*cm, 5*cm])) story.append(Spacer(1,0.2*cm)) story.append(clinical_box( "'Water under the bridge': Uterine artery crosses OVER the ureter 2 cm lateral to cervix at level of internal os. " "Ureter = 'water'; uterine artery = 'bridge'. Critical in hysterectomy — ureter at risk!")) story.append(Paragraph("Broad Ligament", h2_style)) for t in ["Double fold of peritoneum extending from uterus to pelvic sidewalls", "Mesosalpinx (contains uterine tube) · Mesovarium (contains ovary) · Mesometrium (contains round ligament, uterine vessels)", "NOT a true ligament — provides NO significant support"]: story.append(bullet(t)) story.append(Paragraph("Fallopian Tubes (~10 cm)", h2_style)) ft_data = [["Part", "Location", "Clinical"], ["Interstitial (intramural)", "Within uterine wall", "Narrowest; rarely ruptures (ectopic)"], ["Isthmus", "Near uterus", "Sterilization site"], ["Ampulla", "Main segment; widest", "Most common site of ectopic pregnancy"], ["Infundibulum", "Funnel-shaped, fimbriae", "Picks up ovulated oocyte"]] story.append(make_table(ft_data[0], ft_data[1:], [4*cm, 4*cm, 9*cm])) story.append(Spacer(1,0.2*cm)) story.append(Paragraph("Ovaries", h2_style)) for t in ["Size: 3 × 2 × 1 cm; position variable", "Suspended by: mesovarium · ovarian ligament (to uterus) · suspensory/infundibulopelvic ligament (contains ovarian vessels)", "NOT covered by peritoneum (germinal epithelium = simple cuboidal epithelium)", "Lymphatics → para-aortic nodes at L2 (same as testes — shared embryological origin)"]: story.append(bullet(t)) story.append(Paragraph("Vagina", h2_style)) for t in ["~8-9 cm; anterior wall shorter (7 cm) than posterior wall (9 cm)", "Fornices: lateral, anterior, posterior; POSTERIOR fornix deepest → related to Pouch of Douglas", "Blood: vaginal artery (from internal iliac)", "Upper 1/4 derived from Mullerian duct; lower 3/4 from urogenital sinus"]: story.append(bullet(t)) story.append(Paragraph("Pudendal Nerve — S2, S3, S4", h2_style)) for t in ["'Nerve of perineum' — ALL perineal sensation and motor", "Path: exits greater sciatic foramen below piriformis → crosses sacrospinous ligament (at ischial spine) → enters lesser sciatic foramen → enters Alcock's canal (pudendal canal)", "Branches: dorsal nerve of penis/clitoris · perineal nerve · inferior rectal nerve", "Pudendal nerve block: at ischial spine (transvaginal or transperineal approach)"]: story.append(bullet(t)) story.append(Paragraph("Rectum", h2_style)) for t in ["S3 level → anorectal junction (levator ani)", "Houston's valves (transverse rectal folds): 3 total — 2 on left, 1 on right", "Peritoneal relations: upper 1/3 (front + sides) · middle 1/3 (front only) · lower 1/3 (extraperitoneal)", "Anal canal: 4 cm; dentate/pectinate line = junction of endoderm (above) + ectoderm (below)", "Above dentate: internal hemorrhoids (painless), columnar epithelium, autonomic innervation, drain to portal", "Below dentate: external hemorrhoids (painful), squamous epithelium, somatic innervation, drain to caval"]: story.append(bullet(t)) story.append(PageBreak()) # ═══════════════════════════════════════════════════════════════════════════════ # CLINICAL SUMMARY TABLE # ═══════════════════════════════════════════════════════════════════════════════ story.append(Paragraph("QUICK-REFERENCE: Clinical Correlations", h1_style)) story.append(Spacer(1,0.2*cm)) clin_data = [["Condition", "Anatomical Basis", "Key Exam Fact"], ["Indirect inguinal hernia", "Patent processus vaginalis", "Lateral to inf. epigastric; congenital; more common"], ["Direct inguinal hernia", "Weak posterior wall / Hesselbach's", "Medial to inf. epigastric; acquired; in elderly"], ["Femoral hernia", "Femoral canal (lateral to pubic tubercle)", "More common in women; below inguinal ligament"], ["Appendicitis", "McBurney's point; appendicular end artery", "Confluence of taenia coli = appendix base"], ["Splenic rupture", "Left hypochondrium, 9-11th ribs", "Kehr's sign; perisplenic blood in left paracolic gutter"], ["Portal hypertension", "Porto-systemic anastomoses", "4 sites: esophageal, anal, paraumbilical, retroperitoneal"], ["Ureteric colic", "3 natural narrowings", "PUJ > pelvic brim > VUJ"], ["Prostate cancer spread", "Batson's plexus ↔ vertebral plexus", "Osteosclerotic (not lytic) vertebral metastases"], ["Ureteric injury in hysterectomy", "Uterine a. crosses over ureter", "'Water under bridge' at level of internal os"], ["Splenic flexure ischemia", "Watershed SMA/IMA", "Griffiths' point; lowest perfusion pressure"], ["Pyloric stenosis (infant)", "Hypertrophied pyloric muscle", "Projectile vomiting; hypochloremic metabolic alkalosis"], ["Meckel's diverticulum", "Remnant of vitello-intestinal duct", "Rule of 2's; may contain gastric mucosa → bleeds"], ["Meralgia paresthetica", "Lat. cutaneous nerve of thigh compressed", "Under inguinal lig; burning lateral thigh pain"], ["Ectopic pregnancy", "Ampulla of fallopian tube (most common)", "Tubal rupture → hemoperitoneum → Pouch of Douglas"]] story.append(make_table(clin_data[0], clin_data[1:], [4.5*cm, 5.5*cm, 7*cm])) story.append(Spacer(1,0.5*cm)) story.append(HRFlowable(width="100%", thickness=1, color=colors.HexColor("#1a3a5c"))) story.append(Spacer(1,0.2*cm)) story.append(Paragraph( "<i>Sources: Gray's Anatomy for Students · Snell's Clinical Anatomy · Bailey &amp; Love's Surgery · " "Cadaver images from peer-reviewed medical literature (open access). " "Generated by Orris Medical AI — August 2026.</i>", ParagraphStyle("Footer", parent=styles["Normal"], fontSize=8, textColor=colors.grey, alignment=TA_CENTER) )) # ── BUILD ───────────────────────────────────────────────────────────────────── doc.build(story) print("PDF built successfully!") PYEOF echo "Script written."

Running Command

cd /tmp/workspace/anatomy-prelims && python build_pdf.py 2>&1

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