Based on keith Moore, , Langham and inderbir singh embryology textbooks( or others if not available), and inderbir singh Histology textbook( and any other similar one) give me 700 mcq questions on: [Histology outline] Epithelial tissues Connective tissues Muscle tissue Cartilage Bone Nerve tissue Adipose tissue [Embryology outline] Gametogenesis Fertilization 1 week to Birth Birth defects. Majority of questions should not be single based answer( about 75% in both histology and embryology),rather they should have more than 1 answer or no answer in the options, the options for these types of questions should have true or false after every option(for Example, "option A: deltoid muscle. True or false". Lastly the questions should be typed in different rows or paragraphs from the question not on the same row of the question, just like in CBT Exams
Reading File
Finding Sources
Finding Sources
Running Command
mkdir -p /home/daytona/workspace/mcq-questions && echo "Directory ready"
Try again but write them here first before making the pdf
Continue from where you stopped
While writing them here, you stopped at question 365(Adipose tissue), please continue to write the remaining questions
You can stop now, just make from question 366 to 500 into a pdf
Reading File
Running Command
mkdir -p /home/daytona/workspace/mcq-questions && echo "ready"
Writing File
~/mcq-questions/generate_pdf.py
from reportlab.lib.pagesizes import A4
from reportlab.lib.styles import getSampleStyleSheet, ParagraphStyle
from reportlab.lib.units import cm
from reportlab.platypus import SimpleDocTemplate, Paragraph, Spacer, HRFlowable
from reportlab.lib.enums import TA_LEFT, TA_CENTER
from reportlab.lib import colors
output_path = "/home/daytona/workspace/mcq-questions/MCQ_Q366_to_Q500.pdf"
doc = SimpleDocTemplate(
output_path,
pagesize=A4,
leftMargin=2*cm,
rightMargin=2*cm,
topMargin=2.5*cm,
bottomMargin=2.5*cm,
)
styles = getSampleStyleSheet()
title_style = ParagraphStyle(
"TitleStyle",
parent=styles["Title"],
fontSize=16,
spaceAfter=6,
textColor=colors.HexColor("#1a1a2e"),
alignment=TA_CENTER,
)
subtitle_style = ParagraphStyle(
"SubtitleStyle",
parent=styles["Normal"],
fontSize=10,
spaceAfter=14,
textColor=colors.HexColor("#444444"),
alignment=TA_CENTER,
)
section_style = ParagraphStyle(
"SectionStyle",
parent=styles["Heading1"],
fontSize=13,
spaceBefore=16,
spaceAfter=6,
textColor=colors.HexColor("#1a1a2e"),
borderPad=4,
)
subsection_style = ParagraphStyle(
"SubsectionStyle",
parent=styles["Heading2"],
fontSize=11,
spaceBefore=12,
spaceAfter=4,
textColor=colors.HexColor("#2d6a4f"),
)
question_style = ParagraphStyle(
"QuestionStyle",
parent=styles["Normal"],
fontSize=10.5,
spaceBefore=10,
spaceAfter=4,
leading=15,
textColor=colors.HexColor("#1a1a1a"),
fontName="Helvetica-Bold",
)
option_style = ParagraphStyle(
"OptionStyle",
parent=styles["Normal"],
fontSize=10,
spaceBefore=2,
spaceAfter=2,
leading=14,
leftIndent=18,
textColor=colors.HexColor("#222222"),
)
answer_style = ParagraphStyle(
"AnswerStyle",
parent=styles["Normal"],
fontSize=10,
spaceBefore=4,
spaceAfter=8,
leading=14,
leftIndent=18,
textColor=colors.HexColor("#155724"),
fontName="Helvetica-Bold",
)
story = []
# Title
story.append(Paragraph("HISTOLOGY & EMBRYOLOGY MCQ BANK", title_style))
story.append(Paragraph("Questions 366 – 500 | Based on Langman, Keith Moore, Ross & Junqueira", subtitle_style))
story.append(HRFlowable(width="100%", thickness=1.5, color=colors.HexColor("#1a1a2e"), spaceAfter=14))
questions = [
{
"section": "ADIPOSE TISSUE (continued)",
"subsection": None,
"items": [
{
"num": 366,
"q": "Regarding the innervation of adipose tissue:",
"opts": [
"A: White adipose tissue receives sympathetic innervation. True or False",
"B: Brown adipose tissue is more richly innervated than white adipose tissue. True or False",
"C: Norepinephrine stimulates lipolysis in adipocytes. True or False",
"D: Parasympathetic innervation is the primary regulator of brown fat thermogenesis. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False",
},
{
"num": 367,
"q": "Which of the following statements about leptin are correct?",
"opts": [
"A: Leptin is secreted by adipocytes. True or False",
"B: Leptin acts on the hypothalamus to suppress appetite. True or False",
"C: Leptin levels are low in obese individuals. True or False",
"D: Leptin promotes energy expenditure. True or False",
],
"ans": "Answers: A-True, B-True, C-False (levels are HIGH in obese individuals; resistance develops), D-True",
},
{
"num": 368,
"q": "Regarding adiponectin:",
"opts": [
"A: Adiponectin is secreted by adipocytes. True or False",
"B: Adiponectin levels are elevated in obesity. True or False",
"C: Adiponectin has anti-inflammatory properties. True or False",
"D: Adiponectin improves insulin sensitivity. True or False",
],
"ans": "Answers: A-True, B-False (levels are decreased in obesity), C-True, D-True",
},
{
"num": 369,
"q": "Concerning the microscopic appearance of white adipose tissue:",
"opts": [
"A: The nucleus of a white adipocyte is typically centrally located. True or False",
"B: White adipocytes appear as signet ring cells on routine H&E sections. True or False",
"C: The lipid droplet in white adipocytes is preserved in routine paraffin sections. True or False",
"D: White adipose tissue has abundant mitochondria visible on electron microscopy. True or False",
],
"ans": "Answers: A-False (nucleus is peripherally displaced), B-True, C-False (lipid dissolves during processing), D-False (brown fat has abundant mitochondria)",
},
{
"num": 370,
"q": "Which of the following are features of beige (brite) adipocytes?",
"opts": [
"A: Beige adipocytes arise within white adipose tissue depots. True or False",
"B: Beige adipocytes express UCP1 when stimulated. True or False",
"C: Cold exposure promotes browning of white adipose tissue. True or False",
"D: Beige adipocytes are identical to classical brown adipocytes in origin. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (they differ in developmental origin)",
},
{
"num": 371,
"q": "Regarding the vascular supply of adipose tissue:",
"opts": [
"A: Adipose tissue is poorly vascularized. True or False",
"B: Each adipocyte is in close contact with at least one capillary. True or False",
"C: The rich vascular supply facilitates rapid uptake and release of fatty acids. True or False",
"D: Adipose tissue contributes to angiogenesis through VEGF secretion. True or False",
],
"ans": "Answers: A-False (it is richly vascularized), B-True, C-True, D-True",
},
{
"num": 372,
"q": "Which of the following correctly describes lipid metabolism in adipocytes?",
"opts": [
"A: Lipoprotein lipase on capillary endothelium cleaves triglycerides from circulating lipoproteins. True or False",
"B: Insulin stimulates lipolysis. True or False",
"C: Hormone-sensitive lipase is activated by glucagon and catecholamines. True or False",
"D: Fatty acids released during lipolysis bind to albumin for transport in blood. True or False",
],
"ans": "Answers: A-True, B-False (insulin promotes lipogenesis and inhibits lipolysis), C-True, D-True",
},
{
"num": 373,
"q": "Concerning visceral versus subcutaneous adipose tissue:",
"opts": [
"A: Visceral adipose tissue is more metabolically active than subcutaneous fat. True or False",
"B: Visceral fat accumulation is more strongly associated with metabolic syndrome. True or False",
"C: Subcutaneous fat releases free fatty acids directly into the portal circulation. True or False",
"D: Visceral adipose tissue produces more inflammatory cytokines than subcutaneous fat. True or False",
],
"ans": "Answers: A-True, B-True, C-False (visceral fat drains into portal circulation; subcutaneous into systemic), D-True",
},
{
"num": 374,
"q": "Which of the following statements about adipose tissue as an endocrine organ are true?",
"opts": [
"A: Adipose tissue secretes resistin. True or False",
"B: Adipose tissue converts androgens to estrogens via aromatase. True or False",
"C: Adipose tissue secretes visfatin. True or False",
"D: Adipose tissue is the sole source of leptin in the body. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (other tissues can produce small amounts)",
},
{
"num": 375,
"q": "Which of the following is NOT a characteristic of brown adipose tissue?",
"opts": [
"A: Single large lipid droplet per cell",
"B: Multilocular lipid droplets",
"C: Abundant mitochondria",
"D: High expression of UCP1",
],
"ans": "Answer: A",
},
],
},
{
"section": "EMBRYOLOGY",
"subsection": "PART 1: GAMETOGENESIS",
"items": [
{
"num": 376,
"q": "Regarding spermatogenesis, which of the following are correct?",
"opts": [
"A: Spermatogenesis begins at puberty. True or False",
"B: The entire process of spermatogenesis takes approximately 64-74 days in humans. True or False",
"C: Spermatogonia are located at the luminal surface of the seminiferous tubule. True or False",
"D: Sertoli cells provide physical and nutritional support to developing spermatids. True or False",
],
"ans": "Answers: A-True, B-True, C-False (they are at the basal surface), D-True",
},
{
"num": 377,
"q": "Which of the following statements about spermiogenesis are correct?",
"opts": [
"A: Spermiogenesis involves cell division. True or False",
"B: The acrosome is derived from the Golgi apparatus. True or False",
"C: Excess cytoplasm is shed as the residual body during spermiogenesis. True or False",
"D: The midpiece of the sperm contains mitochondria arranged in a helix. True or False",
],
"ans": "Answers: A-False (spermiogenesis is differentiation without division), B-True, C-True, D-True",
},
{
"num": 378,
"q": "Concerning oogenesis:",
"opts": [
"A: Oogonia undergo mitosis during fetal life. True or False",
"B: Primary oocytes are arrested in prophase of meiosis I at birth. True or False",
"C: The first meiotic division is completed at ovulation. True or False",
"D: The second meiotic division is completed only upon fertilization. True or False",
],
"ans": "Answers: A-True, B-True, C-False (completed just before ovulation, producing a secondary oocyte), D-True",
},
{
"num": 379,
"q": "Which of the following are features of the blood-testis barrier?",
"opts": [
"A: It is formed by tight junctions between adjacent Sertoli cells. True or False",
"B: It protects developing spermatocytes from autoimmune attack. True or False",
"C: It is established at puberty. True or False",
"D: Spermatogonia lie within the adluminal compartment behind the barrier. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (spermatogonia are in the basal compartment, outside the barrier)",
},
{
"num": 380,
"q": "Regarding the hormonal control of spermatogenesis:",
"opts": [
"A: FSH acts on Leydig cells to stimulate testosterone production. True or False",
"B: LH stimulates Leydig cells to produce testosterone. True or False",
"C: Testosterone is required for spermatogenesis. True or False",
"D: Inhibin B from Sertoli cells provides negative feedback on FSH. True or False",
],
"ans": "Answers: A-False (FSH acts on Sertoli cells; LH acts on Leydig cells), B-True, C-True, D-True",
},
{
"num": 381,
"q": "Which of the following correctly describe the stages of meiosis in male gametogenesis?",
"opts": [
"A: Primary spermatocytes undergo the first meiotic division to form secondary spermatocytes. True or False",
"B: Secondary spermatocytes are haploid. True or False",
"C: Spermatids result from the second meiotic division. True or False",
"D: Each primary spermatocyte ultimately produces four spermatids. True or False",
],
"ans": "Answers: A-True, B-True (haploid for chromosomes), C-True, D-True",
},
{
"num": 382,
"q": "Concerning the structure of the mature spermatozoon:",
"opts": [
"A: The head contains the nucleus and acrosome. True or False",
"B: The principal piece is the longest part of the sperm tail. True or False",
"C: The axoneme has a 9+2 arrangement of microtubules. True or False",
"D: The fibrous sheath surrounds the midpiece. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (fibrous sheath surrounds the principal piece, not the midpiece)",
},
{
"num": 383,
"q": "Which of the following statements about folliculogenesis are correct?",
"opts": [
"A: Primordial follicles consist of a primary oocyte surrounded by a single layer of squamous granulosa cells. True or False",
"B: The zona pellucida is first formed around the primary oocyte in the primordial follicle stage. True or False",
"C: The antrum forms in the secondary follicle stage. True or False",
"D: The Graafian follicle contains a secondary oocyte. True or False",
],
"ans": "Answers: A-True, B-False (zona pellucida forms during the primary follicle stage), C-False (antrum forms in the tertiary/antral follicle stage), D-True",
},
{
"num": 384,
"q": "Regarding polar bodies:",
"opts": [
"A: The first polar body is produced at completion of meiosis I. True or False",
"B: The first polar body may undergo a second meiotic division. True or False",
"C: Polar bodies receive equal amounts of cytoplasm compared to the oocyte. True or False",
"D: The second polar body is expelled upon fertilization. True or False",
],
"ans": "Answers: A-True, B-True, C-False (polar bodies receive minimal cytoplasm), D-True",
},
{
"num": 385,
"q": "Which of the following are functions of Sertoli cells?",
"opts": [
"A: Secretion of androgen-binding protein (ABP). True or False",
"B: Production of testosterone. True or False",
"C: Phagocytosis of residual bodies shed during spermiogenesis. True or False",
"D: Secretion of anti-Mullerian hormone (AMH). True or False",
],
"ans": "Answers: A-True, B-False (Leydig cells produce testosterone), C-True, D-True",
},
{
"num": 386,
"q": "Concerning the ovarian cycle:",
"opts": [
"A: The follicular phase is characterized by rising estrogen levels. True or False",
"B: The LH surge triggers ovulation. True or False",
"C: The corpus luteum secretes progesterone and estrogen. True or False",
"D: If fertilization does not occur, the corpus luteum persists for the entire menstrual cycle. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (it degenerates into the corpus albicans after approximately 14 days)",
},
{
"num": 387,
"q": "Which of the following describe capacitation of spermatozoa?",
"opts": [
"A: Capacitation occurs in the male reproductive tract. True or False",
"B: Capacitation involves removal of cholesterol from the sperm plasma membrane. True or False",
"C: Capacitation is required for the acrosome reaction. True or False",
"D: Capacitation results in hyperpolarization of the sperm membrane. True or False",
],
"ans": "Answers: A-False (occurs in the female reproductive tract), B-True, C-True, D-False (it ultimately leads to hyperactivation)",
},
{
"num": 388,
"q": "Which of the following are correct regarding spermatogonial stem cells?",
"opts": [
"A: Type A spermatogonia serve as stem cells. True or False",
"B: Type B spermatogonia differentiate into primary spermatocytes. True or False",
"C: Spermatogonial stem cells are located in the adluminal compartment. True or False",
"D: Spermatogonia divide by mitosis to maintain the stem cell pool. True or False",
],
"ans": "Answers: A-True, B-True, C-False (they are in the basal compartment), D-True",
},
{
"num": 389,
"q": "Regarding the acrosome reaction:",
"opts": [
"A: The acrosome reaction is triggered by contact with the zona pellucida. True or False",
"B: The acrosome reaction involves fusion of the outer acrosomal membrane with the plasma membrane. True or False",
"C: Acrosomal enzymes include hyaluronidase and acrosin. True or False",
"D: The acrosome reaction occurs before the sperm reaches the zona pellucida. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (it is triggered by the zona pellucida)",
},
{
"num": 390,
"q": "Which of the following correctly describe oogenesis versus spermatogenesis?",
"opts": [
"A: Oogenesis produces four functional gametes per primary oocyte. True or False",
"B: Spermatogenesis is a continuous process throughout adult life. True or False",
"C: Oogenesis is arrested at two different points during development. True or False",
"D: Spermatogenesis takes longer than oogenesis to complete. True or False",
],
"ans": "Answers: A-False (produces one oocyte and up to three polar bodies), B-True, C-True (prophase I before birth; metaphase II until fertilization), D-True",
},
],
},
{
"section": None,
"subsection": "PART 2: FERTILIZATION",
"items": [
{
"num": 391,
"q": "Which of the following statements about fertilization are correct?",
"opts": [
"A: Fertilization normally occurs in the ampulla of the uterine tube. True or False",
"B: Fertilization restores the diploid chromosome number. True or False",
"C: The zona reaction prevents polyspermy. True or False",
"D: The sex of the embryo is determined at fertilization. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 392,
"q": "Regarding the cortical reaction:",
"opts": [
"A: The cortical reaction is triggered by the rise in intracellular calcium following sperm penetration. True or False",
"B: Cortical granules fuse with the plasma membrane and release their contents into the perivitelline space. True or False",
"C: The cortical reaction modifies the zona pellucida to form the fertilization membrane. True or False",
"D: The cortical reaction is an example of a slow block to polyspermy. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 393,
"q": "Which of the following events occur during fertilization?",
"opts": [
"A: Completion of the second meiotic division of the oocyte. True or False",
"B: Formation of male and female pronuclei. True or False",
"C: Immediate fusion of male and female pronuclei to form the zygote nucleus. True or False",
"D: Activation of the oocyte's metabolic machinery. True or False",
],
"ans": "Answers: A-True, B-True, C-False (pronuclei do not fuse; their membranes break down at first cleavage), D-True",
},
{
"num": 394,
"q": "Regarding the fast block to polyspermy:",
"opts": [
"A: It involves depolarization of the oocyte plasma membrane. True or False",
"B: It occurs within seconds of the first sperm binding. True or False",
"C: It is a permanent block to polyspermy. True or False",
"D: It is mediated by cortical granule exocytosis. True or False",
],
"ans": "Answers: A-True, B-True, C-False (it is transient; the zona reaction is the permanent block), D-False (the zona reaction is mediated by cortical granule exocytosis)",
},
{
"num": 395,
"q": "Which of the following correctly describe sperm-egg interaction?",
"opts": [
"A: ZP3 is the primary zona pellucida glycoprotein responsible for sperm binding. True or False",
"B: ZP2 functions as a secondary receptor after the acrosome reaction. True or False",
"C: The zona pellucida is composed of three glycoproteins: ZP1, ZP2, and ZP3. True or False",
"D: After fertilization, ZP3 is cleaved to prevent additional sperm binding. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 396,
"q": "Concerning the results of fertilization:",
"opts": [
"A: A new genetically unique individual is created. True or False",
"B: The zygote is formed when cleavage begins. True or False",
"C: Determination of the sex of the new individual occurs. True or False",
"D: Metabolic activation of the egg occurs. True or False",
],
"ans": "Answers: A-True, B-False (the zygote is the fertilized egg before cleavage begins), C-True, D-True",
},
{
"num": 397,
"q": "Which of the following are correct about sperm transport in the female reproductive tract?",
"opts": [
"A: Sperm can reach the uterine tube within minutes of ejaculation. True or False",
"B: Uterine contractions assist in sperm transport. True or False",
"C: Only a small fraction of ejaculated sperm reach the site of fertilization. True or False",
"D: Sperm remain viable in the female reproductive tract for up to 7 days. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (sperm remain viable for approximately 3-5 days)",
},
{
"num": 398,
"q": "Which of the following is the correct sequence of events in fertilization?",
"opts": [
"A: Acrosome reaction → penetration of zona pellucida → fusion with oocyte membrane → cortical reaction",
"B: Cortical reaction → acrosome reaction → penetration of zona pellucida → fusion with oocyte membrane",
"C: Capacitation → acrosome reaction → penetration of zona pellucida → cortical reaction",
"D: Penetration of corona radiata → acrosome reaction → zona pellucida binding → cortical reaction",
],
"ans": "Answer: A and C are both correct descriptions of sequential events",
},
{
"num": 399,
"q": "Regarding ectopic pregnancy:",
"opts": [
"A: The most common site of ectopic implantation is the ampulla of the uterine tube. True or False",
"B: Ovarian ectopic pregnancy is more common than tubal ectopic pregnancy. True or False",
"C: Previous pelvic inflammatory disease is a risk factor for ectopic pregnancy. True or False",
"D: An ectopic pregnancy can produce hCG. True or False",
],
"ans": "Answers: A-True, B-False (tubal ectopic is most common, >95%), C-True, D-True",
},
{
"num": 400,
"q": "Which of the following are correct about the zygote?",
"opts": [
"A: The zygote is diploid. True or False",
"B: The zygote begins cleavage within 24-30 hours of fertilization. True or False",
"C: Cleavage divisions increase the size of the embryo. True or False",
"D: The cells produced by cleavage are called blastomeres. True or False",
],
"ans": "Answers: A-True, B-True, C-False (blastomeres become progressively smaller), D-True",
},
],
},
{
"section": None,
"subsection": "PART 3: WEEK 1 (CLEAVAGE, MORULA, BLASTOCYST)",
"items": [
{
"num": 401,
"q": "Which of the following correctly describe cleavage?",
"opts": [
"A: Cleavage divisions are mitotic. True or False",
"B: During cleavage, the cells grow between divisions. True or False",
"C: By the 16-cell stage, the embryo is called a morula. True or False",
"D: Cleavage occurs as the zygote travels down the uterine tube. True or False",
],
"ans": "Answers: A-True, B-False (cells do not grow; they get smaller), C-True, D-True",
},
{
"num": 402,
"q": "Regarding the morula:",
"opts": [
"A: The morula consists of a distinct outer trophoblast and inner cell mass. True or False",
"B: Compaction of the morula is mediated by E-cadherin. True or False",
"C: The morula enters the uterine cavity approximately 3 days after fertilization. True or False",
"D: The morula is surrounded by the zona pellucida. True or False",
],
"ans": "Answers: A-False (distinct ICM and trophoblast differentiation occurs in the blastocyst stage), B-True, C-True, D-True",
},
{
"num": 403,
"q": "Which of the following statements about the blastocyst are correct?",
"opts": [
"A: The blastocyst has a fluid-filled cavity called the blastocoel. True or False",
"B: The inner cell mass (embryoblast) gives rise to the embryo proper. True or False",
"C: The trophoblast gives rise to the placenta. True or False",
"D: The blastocyst hatches from the zona pellucida before implantation. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 404,
"q": "Regarding implantation:",
"opts": [
"A: Implantation normally occurs on approximately day 6-7 after fertilization. True or False",
"B: The most common site of implantation is the posterior wall of the uterine body. True or False",
"C: Implantation involves invasion of the endometrium by the trophoblast. True or False",
"D: The endometrium must be in the secretory phase for implantation to occur. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 405,
"q": "Which of the following describe the trophoblast at the time of implantation?",
"opts": [
"A: The trophoblast differentiates into cytotrophoblast and syncytiotrophoblast. True or False",
"B: The syncytiotrophoblast invades the endometrial stroma. True or False",
"C: The cytotrophoblast is a mitotically active layer. True or False",
"D: The syncytiotrophoblast begins producing hCG at implantation. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 406,
"q": "Concerning hCG (human chorionic gonadotropin):",
"opts": [
"A: hCG is produced by the syncytiotrophoblast. True or False",
"B: hCG maintains the corpus luteum in early pregnancy. True or False",
"C: hCG levels peak at approximately 8-10 weeks of gestation. True or False",
"D: hCG has LH-like activity. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 407,
"q": "Which of the following are features of Week 1 of embryonic development?",
"opts": [
"A: Fertilization occurs. True or False",
"B: Implantation is completed. True or False",
"C: The blastocyst forms. True or False",
"D: Gastrulation begins. True or False",
],
"ans": "Answers: A-True, B-False (implantation begins at end of week 1 but is completed in week 2), C-True, D-False (gastrulation occurs in week 3)",
},
],
},
{
"section": None,
"subsection": "PART 4: WEEK 2 (BILAMINAR DISC)",
"items": [
{
"num": 408,
"q": "Which of the following events occur during the second week of development?",
"opts": [
"A: Formation of the bilaminar embryonic disc. True or False",
"B: Appearance of the primitive streak. True or False",
"C: Formation of the amnion and yolk sac. True or False",
"D: Completion of implantation. True or False",
],
"ans": "Answers: A-True, B-False (primitive streak appears in week 3), C-True, D-True",
},
{
"num": 409,
"q": "Regarding the inner cell mass (embryoblast) during week 2:",
"opts": [
"A: It differentiates into epiblast and hypoblast. True or False",
"B: The epiblast forms the floor of the amniotic cavity. True or False",
"C: The hypoblast forms the roof of the primary yolk sac. True or False",
"D: The epiblast gives rise to all three germ layers. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 410,
"q": "Which of the following describe the extraembryonic membranes formed in week 2?",
"opts": [
"A: The amnion is derived from epiblast cells. True or False",
"B: The primary yolk sac is lined by hypoblast (Heuser's membrane). True or False",
"C: The extraembryonic mesoderm fills the space between the trophoblast and amnion/yolk sac. True or False",
"D: The chorionic cavity (extraembryonic coelom) forms within the extraembryonic mesoderm. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 411,
"q": "Regarding the trophoblast in week 2:",
"opts": [
"A: Lacunae form within the syncytiotrophoblast. True or False",
"B: Erosion of maternal blood vessels creates the uteroplacental circulation. True or False",
"C: Primary chorionic villi consist of a cytotrophoblast core covered by syncytiotrophoblast. True or False",
"D: The decidua basalis is the decidua between the embryo and the myometrium. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 412,
"q": "Which of the following is the 'week of twos' concept?",
"opts": [
"A: Two germ layers (epiblast and hypoblast) form the bilaminar disc. True or False",
"B: Two cavities form (amniotic cavity and yolk sac). True or False",
"C: Two trophoblast layers differentiate (cytotrophoblast and syncytiotrophoblast). True or False",
"D: Two placental layers form (decidua basalis and decidua capsularis). True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (not part of the classic 'week of twos' teaching)",
},
],
},
{
"section": None,
"subsection": "PART 5: WEEK 3 (GASTRULATION, NEURULATION)",
"items": [
{
"num": 413,
"q": "Which of the following correctly describe gastrulation?",
"opts": [
"A: Gastrulation converts the bilaminar disc into a trilaminar disc. True or False",
"B: The primitive streak appears in the caudal region of the epiblast. True or False",
"C: Cells that migrate through the primitive streak form intraembryonic mesoderm and endoderm. True or False",
"D: The notochord develops from the primitive streak. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True (notochordal process from the primitive node)",
},
{
"num": 414,
"q": "Regarding the notochord:",
"opts": [
"A: The notochord defines the longitudinal axis of the embryo. True or False",
"B: The notochord persists in the adult as the nucleus pulposus. True or False",
"C: The notochord induces the overlying ectoderm to form the neural plate. True or False",
"D: The notochord gives rise to the vertebral bodies. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (vertebral bodies form from sclerotome of somites)",
},
{
"num": 415,
"q": "Which of the following are correct about neurulation?",
"opts": [
"A: The neural plate is induced by the notochord. True or False",
"B: Neural folds fuse to form the neural tube. True or False",
"C: Fusion of neural folds begins in the middle of the embryo and proceeds bidirectionally. True or False",
"D: The rostral neuropore closes before the caudal neuropore. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 416,
"q": "Regarding neural crest cells:",
"opts": [
"A: Neural crest cells originate at the lateral margins of the neural plate. True or False",
"B: Neural crest cells are pluripotent migratory cells. True or False",
"C: Neural crest cells give rise to dorsal root ganglia. True or False",
"D: Neural crest cells contribute to the bones of the skull. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 417,
"q": "Which of the following structures are derived from neural crest cells?",
"opts": [
"A: Adrenal medulla. True or False",
"B: Melanocytes. True or False",
"C: Schwann cells. True or False",
"D: Adrenal cortex. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (adrenal cortex is derived from mesoderm)",
},
{
"num": 418,
"q": "Concerning somite formation:",
"opts": [
"A: Somites form from paraxial mesoderm. True or False",
"B: Somites differentiate into sclerotome, myotome, and dermatome. True or False",
"C: The sclerotome gives rise to vertebrae and ribs. True or False",
"D: The first somites appear in the occipital region. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 419,
"q": "Which of the following events characterize week 3 of development?",
"opts": [
"A: Formation of the trilaminar germ disc. True or False",
"B: Establishment of the body axes. True or False",
"C: Development of the heart and blood vessels begins. True or False",
"D: Formation of the lens and optic cup. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (lens and optic cup form later, in weeks 4-5)",
},
{
"num": 420,
"q": "Regarding the intraembryonic coelom:",
"opts": [
"A: It forms within the lateral plate mesoderm. True or False",
"B: It gives rise to the pericardial, pleural, and peritoneal cavities. True or False",
"C: The somatic (parietal) layer of lateral plate mesoderm lines the intraembryonic coelom. True or False",
"D: The intraembryonic coelom is initially continuous with the extraembryonic coelom. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
],
},
{
"section": None,
"subsection": "PART 6: WEEKS 4-8 (EMBRYONIC PERIOD - ORGANOGENESIS)",
"items": [
{
"num": 421,
"q": "Which of the following occur during week 4 of development?",
"opts": [
"A: Folding of the embryonic disc in both cephalocaudal and lateral directions. True or False",
"B: Formation of the head fold and tail fold. True or False",
"C: The heart begins to beat. True or False",
"D: Upper limb buds appear. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 422,
"q": "Regarding the pharyngeal (branchial) arches:",
"opts": [
"A: There are 5 pharyngeal arches in humans (1, 2, 3, 4, and 6). True or False",
"B: Each pharyngeal arch contains a nerve, artery, cartilage, and muscle component. True or False",
"C: The first pharyngeal arch gives rise to muscles of mastication. True or False",
"D: The second pharyngeal arch gives rise to muscles of facial expression. True or False",
],
"ans": "Answers: A-True (arch 5 is rudimentary/absent), B-True, C-True, D-True",
},
{
"num": 423,
"q": "Which cranial nerve is associated with each pharyngeal arch?",
"opts": [
"A: 1st arch - CN V (trigeminal). True or False",
"B: 2nd arch - CN VII (facial). True or False",
"C: 3rd arch - CN IX (glossopharyngeal). True or False",
"D: 4th and 6th arches - CN X (vagus). True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 424,
"q": "Regarding derivatives of the pharyngeal pouches:",
"opts": [
"A: The first pharyngeal pouch forms the tympanic cavity and Eustachian tube. True or False",
"B: The second pharyngeal pouch contributes to the palatine tonsil. True or False",
"C: The third pharyngeal pouch gives rise to the inferior parathyroid glands and thymus. True or False",
"D: The fourth pharyngeal pouch gives rise to the superior parathyroid glands and ultimobranchial body. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 425,
"q": "Which of the following are correct about limb development?",
"opts": [
"A: Upper limb buds appear before lower limb buds. True or False",
"B: The apical ectodermal ridge (AER) controls proximodistal outgrowth of the limb. True or False",
"C: The zone of polarizing activity (ZPA) controls anteroposterior patterning. True or False",
"D: Sonic hedgehog (Shh) is the signaling molecule produced by the ZPA. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 426,
"q": "Regarding heart development:",
"opts": [
"A: The heart is the first functional organ in the embryo. True or False",
"B: The cardiogenic region is located in the splanchnic mesoderm cranial to the prechordal plate. True or False",
"C: The heart begins to beat at approximately day 22-23. True or False",
"D: The heart tubes fuse to form a single heart tube. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 427,
"q": "Which of the following correctly describe the looping of the heart?",
"opts": [
"A: The heart tube loops to the right (dextral looping) normally. True or False",
"B: Failure of normal looping can result in situs inversus. True or False",
"C: After looping, the bulbus cordis lies ventral and to the right. True or False",
"D: The atria come to lie cranial to the ventricles after looping. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (atria lie dorsal and cranial; ventricles are more caudal and ventral)",
},
{
"num": 428,
"q": "Regarding gut development:",
"opts": [
"A: The gut tube is derived from endoderm. True or False",
"B: The foregut gives rise to the esophagus, stomach, and upper duodenum. True or False",
"C: The midgut gives rise to the small intestine and proximal two-thirds of the colon. True or False",
"D: The hindgut gives rise to the distal one-third of the colon, rectum, and upper part of the anal canal. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 429,
"q": "Which of the following are correct about physiological umbilical herniation?",
"opts": [
"A: The midgut herniates into the umbilical cord during week 6. True or False",
"B: The midgut undergoes 90-degree counterclockwise rotation during herniation. True or False",
"C: The midgut returns to the abdominal cavity by week 10-12. True or False",
"D: Failure of the midgut to return to the abdomen results in gastroschisis. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (failure to return causes omphalocele, not gastroschisis)",
},
{
"num": 430,
"q": "Regarding the development of the respiratory system:",
"opts": [
"A: The respiratory diverticulum arises from the floor of the foregut. True or False",
"B: The tracheoesophageal septum separates the trachea from the esophagus. True or False",
"C: Failure of the tracheoesophageal septum to form correctly results in tracheoesophageal fistula. True or False",
"D: Type II pneumocytes begin producing surfactant after 26 weeks of gestation. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
],
},
{
"section": None,
"subsection": "PART 7: FETAL PERIOD (WEEK 9 TO BIRTH)",
"items": [
{
"num": 431,
"q": "Which of the following characterize the fetal period?",
"opts": [
"A: The fetal period extends from week 9 to birth. True or False",
"B: Growth and maturation of organs that formed during the embryonic period occurs. True or False",
"C: Major organogenesis occurs during the fetal period. True or False",
"D: The fetus is most susceptible to teratogens during the embryonic period rather than the fetal period. True or False",
],
"ans": "Answers: A-True, B-True, C-False (major organogenesis occurs during the embryonic period), D-True",
},
{
"num": 432,
"q": "Regarding fetal circulation:",
"opts": [
"A: The foramen ovale allows blood to pass from the right atrium to the left atrium. True or False",
"B: The ductus arteriosus connects the pulmonary trunk to the aorta. True or False",
"C: Fetal blood has a higher affinity for oxygen than adult blood. True or False",
"D: The ductus venosus connects the umbilical vein to the inferior vena cava. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 433,
"q": "Which of the following are correct about changes at birth?",
"opts": [
"A: The foramen ovale closes due to increased left atrial pressure. True or False",
"B: The ductus arteriosus closes due to increased oxygen tension and decreased prostaglandins. True or False",
"C: The umbilical arteries become the medial umbilical ligaments. True or False",
"D: The ductus venosus becomes the ligamentum teres hepatis. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (ductus venosus becomes ligamentum venosum; umbilical vein becomes ligamentum teres hepatis)",
},
{
"num": 434,
"q": "Regarding the placenta:",
"opts": [
"A: The placenta is derived from both fetal and maternal tissues. True or False",
"B: The chorion frondosum (villous chorion) contributes to the fetal part of the placenta. True or False",
"C: The decidua basalis forms the maternal part of the placenta. True or False",
"D: Maternal and fetal blood normally mix in the intervillous space. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (maternal blood fills the intervillous space but does not mix with fetal blood)",
},
{
"num": 435,
"q": "Which of the following substances cross the placenta?",
"opts": [
"A: IgG antibodies. True or False",
"B: Insulin. True or False",
"C: Heparin. True or False",
"D: Thyroxine. True or False",
],
"ans": "Answers: A-True, B-False (insulin does not cross the placenta), C-False (heparin is too large), D-True (small amounts)",
},
{
"num": 436,
"q": "Regarding amniotic fluid:",
"opts": [
"A: Amniotic fluid volume increases progressively throughout pregnancy. True or False",
"B: Fetal urine is the major source of amniotic fluid after 16 weeks. True or False",
"C: Fetal swallowing is the major route of amniotic fluid removal. True or False",
"D: Oligohydramnios is associated with renal agenesis. True or False",
],
"ans": "Answers: A-True (until term), B-True, C-True, D-True",
},
{
"num": 437,
"q": "Which of the following are correct about the umbilical cord?",
"opts": [
"A: The normal umbilical cord contains two arteries and one vein. True or False",
"B: The umbilical arteries carry oxygenated blood. True or False",
"C: Wharton's jelly is the connective tissue of the umbilical cord. True or False",
"D: A single umbilical artery is associated with congenital anomalies. True or False",
],
"ans": "Answers: A-True, B-False (umbilical arteries carry deoxygenated blood from fetus to placenta), C-True, D-True",
},
{
"num": 438,
"q": "Which of the following describe the fetal kidney development?",
"opts": [
"A: The three stages of kidney development are pronephros, mesonephros, and metanephros. True or False",
"B: The pronephros is the functional kidney in the human fetus. True or False",
"C: The metanephros is the permanent kidney. True or False",
"D: The ureteric bud induces the metanephric mesoderm to form nephrons. True or False",
],
"ans": "Answers: A-True, B-False (pronephros is vestigial and non-functional in humans), C-True, D-True",
},
{
"num": 439,
"q": "Regarding viability of the fetus:",
"opts": [
"A: A fetus is generally considered viable after 22-24 weeks of gestation. True or False",
"B: Surfactant production begins around 20 weeks but increases significantly after 28 weeks. True or False",
"C: Lecithin-to-sphingomyelin (L/S) ratio of 2:1 indicates lung maturity. True or False",
"D: Respiratory distress syndrome is more common in preterm infants due to surfactant deficiency. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 440,
"q": "Which of the following are landmarks of fetal development?",
"opts": [
"A: At 8 weeks, all major organ systems have begun to form. True or False",
"B: At 12 weeks, external genitalia are distinguishable as male or female. True or False",
"C: At 16 weeks, fetal movements (quickening) are first felt by the mother. True or False",
"D: At 28 weeks, the eyes reopen. True or False",
],
"ans": "Answers: A-True, B-True, C-True (range 16-20 weeks), D-True",
},
],
},
{
"section": None,
"subsection": "PART 8: BIRTH DEFECTS (TERATOLOGY)",
"items": [
{
"num": 441,
"q": "Which of the following are principles of teratology as described by Wilson?",
"opts": [
"A: Susceptibility to teratogenesis depends on the genotype of the embryo. True or False",
"B: Susceptibility to teratogens varies with the developmental stage at the time of exposure. True or False",
"C: Teratogens act by specific mechanisms on developing cells and tissues. True or False",
"D: The manifestations of abnormal development are death, malformation, growth restriction, and functional disorder. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 442,
"q": "Which of the following teratogens are correctly matched with their effects?",
"opts": [
"A: Thalidomide - phocomelia (limb reduction defects). True or False",
"B: Warfarin - nasal hypoplasia and stippled epiphyses. True or False",
"C: Alcohol - fetal alcohol spectrum disorder. True or False",
"D: Isotretinoin - neural tube defects. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (isotretinoin causes craniofacial abnormalities, heart defects, and CNS anomalies)",
},
{
"num": 443,
"q": "Regarding fetal alcohol syndrome (FAS):",
"opts": [
"A: It is the most common preventable cause of intellectual disability. True or False",
"B: Features include microcephaly, smooth philtrum, and thin upper lip. True or False",
"C: There is a safe level of alcohol consumption in pregnancy. True or False",
"D: The CNS is affected because alcohol readily crosses the placenta. True or False",
],
"ans": "Answers: A-True, B-True, C-False (no safe level has been established), D-True",
},
{
"num": 444,
"q": "Which of the following infections are TORCH agents known to cause congenital abnormalities?",
"opts": [
"A: Toxoplasma gondii. True or False",
"B: Rubella virus. True or False",
"C: Cytomegalovirus (CMV). True or False",
"D: Hepatitis B virus. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (Hepatitis B is not a TORCH agent)",
},
{
"num": 445,
"q": "Regarding congenital rubella syndrome:",
"opts": [
"A: Maternal rubella in the first trimester carries the highest risk of fetal abnormalities. True or False",
"B: The classic triad includes cataracts, cardiac defects, and sensorineural deafness. True or False",
"C: Rubella virus crosses the placenta and infects fetal tissues. True or False",
"D: Vaccination in pregnancy is recommended to prevent congenital rubella. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (live vaccines like rubella are contraindicated in pregnancy)",
},
{
"num": 446,
"q": "Which of the following are correctly described as multifactorial inheritance disorders?",
"opts": [
"A: Neural tube defects. True or False",
"B: Cleft lip and palate. True or False",
"C: Down syndrome. True or False",
"D: Congenital hip dysplasia. True or False",
],
"ans": "Answers: A-True, B-True, C-False (Down syndrome is chromosomal/trisomy 21), D-True",
},
{
"num": 447,
"q": "Regarding neural tube defects (NTDs):",
"opts": [
"A: Anencephaly results from failure of the rostral neuropore to close. True or False",
"B: Spina bifida results from failure of the caudal neural tube to close. True or False",
"C: Folic acid supplementation before conception reduces the risk of NTDs. True or False",
"D: Alpha-fetoprotein (AFP) levels are elevated in maternal serum with open NTDs. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 448,
"q": "Which of the following are features of Down syndrome (Trisomy 21)?",
"opts": [
"A: The most common chromosomal abnormality in live-born infants. True or False",
"B: Advanced maternal age is a risk factor. True or False",
"C: Atrioventricular septal defect (AVSD) is the most common cardiac defect. True or False",
"D: All cases result from meiotic nondisjunction. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (approximately 4% result from Robertsonian translocation, and 1% are mosaic)",
},
{
"num": 449,
"q": "Regarding Edwards syndrome (Trisomy 18):",
"opts": [
"A: It is the second most common autosomal trisomy in live-born infants. True or False",
"B: Characteristic features include overlapping fingers and rocker-bottom feet. True or False",
"C: Most affected fetuses are liveborn. True or False",
"D: Prognosis is poor, with most affected infants dying within the first year. True or False",
],
"ans": "Answers: A-True, B-True, C-False (most are lost as spontaneous abortions), D-True",
},
{
"num": 450,
"q": "Which of the following correctly describe Patau syndrome (Trisomy 13)?",
"opts": [
"A: It is associated with holoprosencephaly. True or False",
"B: Median cleft lip and palate are features. True or False",
"C: Polydactyly is a feature. True or False",
"D: Survival to adulthood is common. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (most die within the first months of life)",
},
{
"num": 451,
"q": "Regarding Turner syndrome (45, X):",
"opts": [
"A: It is the most common sex chromosome anomaly in females. True or False",
"B: Webbed neck (pterygium colli) is a feature. True or False",
"C: Coarctation of the aorta is the most common cardiac defect. True or False",
"D: Affected individuals are fertile. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (streak gonads cause infertility)",
},
{
"num": 452,
"q": "Which of the following are correct about Klinefelter syndrome (47, XXY)?",
"opts": [
"A: It is the most common sex chromosome abnormality in males. True or False",
"B: Affected males are typically tall with small testes. True or False",
"C: Gynecomastia is a feature. True or False",
"D: Affected males have normal fertility. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (they are infertile due to azoospermia)",
},
{
"num": 453,
"q": "Regarding congenital heart defects:",
"opts": [
"A: Ventricular septal defect (VSD) is the most common congenital heart defect. True or False",
"B: Transposition of the great arteries results in two parallel circulations. True or False",
"C: Tetralogy of Fallot includes VSD, overriding aorta, pulmonary stenosis, and right ventricular hypertrophy. True or False",
"D: Patent ductus arteriosus is more common in premature infants. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 454,
"q": "Which of the following teratogenic drugs are correctly matched with their mechanisms or effects?",
"opts": [
"A: Valproic acid - neural tube defects by inhibiting folate metabolism. True or False",
"B: ACE inhibitors in second/third trimester - renal tubular dysplasia and oligohydramnios. True or False",
"C: Tetracyclines - discoloration of developing teeth and bone. True or False",
"D: Methotrexate - teratogenic effects by blocking folic acid. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 455,
"q": "Regarding congenital diaphragmatic hernia (CDH):",
"opts": [
"A: It most commonly occurs on the left side. True or False",
"B: It results from failure of the pleuroperitoneal folds to fuse. True or False",
"C: Pulmonary hypoplasia is a major complication. True or False",
"D: The stomach and intestines herniate into the thorax on the right side. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (herniation typically occurs on the LEFT side)",
},
{
"num": 456,
"q": "Which of the following are correctly associated with abnormal sex differentiation?",
"opts": [
"A: Congenital adrenal hyperplasia (CAH) causes virilization of 46,XX females. True or False",
"B: Androgen insensitivity syndrome (AIS) results in a 46,XY individual with female external genitalia. True or False",
"C: In complete AIS, the gonads are testes. True or False",
"D: The SRY gene on the Y chromosome is required for testicular determination. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 457,
"q": "Regarding holoprosencephaly:",
"opts": [
"A: It results from failure of the prosencephalon to divide into two cerebral hemispheres. True or False",
"B: It is associated with Trisomy 13. True or False",
"C: Cyclopia is the most severe form. True or False",
"D: It is always a lethal condition. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (microforms exist with milder clinical presentations)",
},
{
"num": 458,
"q": "Which of the following statements about cleft lip and palate are correct?",
"opts": [
"A: Cleft lip results from failure of fusion of the maxillary and medial nasal processes. True or False",
"B: Cleft palate can occur independently of cleft lip. True or False",
"C: Cleft lip with or without cleft palate is more common in males. True or False",
"D: Isolated cleft palate is more common in females. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 459,
"q": "Regarding gastroschisis versus omphalocele:",
"opts": [
"A: Gastroschisis is a defect to the right of the umbilicus with no covering membrane. True or False",
"B: Omphalocele is covered by a membrane of amnion and peritoneum. True or False",
"C: Omphalocele is associated with chromosomal abnormalities more commonly than gastroschisis. True or False",
"D: Both conditions require surgical correction. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 460,
"q": "Which of the following are correct about oligohydramnios sequence (Potter sequence)?",
"opts": [
"A: It results from severe reduction in amniotic fluid. True or False",
"B: It is classically associated with bilateral renal agenesis. True or False",
"C: Features include pulmonary hypoplasia, limb deformities, and characteristic facies. True or False",
"D: The underlying cause is always renal agenesis. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (any cause of reduced fetal urine output can cause it)",
},
{
"num": 461,
"q": "Regarding DiGeorge syndrome (22q11.2 deletion):",
"opts": [
"A: It results from abnormal development of pharyngeal pouches 3 and 4. True or False",
"B: Features include absence of thymus and parathyroid glands. True or False",
"C: T-cell immunodeficiency is a consequence. True or False",
"D: Conotruncal heart defects are common. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 462,
"q": "Which of the following are correct about chromosomal nondisjunction?",
"opts": [
"A: Nondisjunction can occur during meiosis I or meiosis II. True or False",
"B: Nondisjunction during meiosis I affects both daughter cells. True or False",
"C: Maternal age affects the rate of nondisjunction in oogenesis. True or False",
"D: Mosaicism results from nondisjunction in a mitotic division after fertilization. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 463,
"q": "Regarding Meckel's diverticulum:",
"opts": [
"A: It is a remnant of the vitello-intestinal (omphalomesenteric) duct. True or False",
"B: It is located on the antimesenteric border of the ileum. True or False",
"C: The 'rule of twos' states it is found in 2% of the population, 2 feet from the ileocecal valve, and is 2 inches long. True or False",
"D: It may contain ectopic gastric or pancreatic tissue. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 464,
"q": "Which of the following are correct about Hirschsprung disease?",
"opts": [
"A: It results from failure of neural crest cells to migrate into the bowel wall. True or False",
"B: The affected segment of bowel lacks ganglion cells (aganglionosis). True or False",
"C: The rectosigmoid region is most commonly affected. True or False",
"D: The aganglionic segment is dilated (megacolon). True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (the aganglionic segment is NARROW; the proximal segment is dilated)",
},
{
"num": 465,
"q": "Regarding esophageal atresia with tracheoesophageal fistula:",
"opts": [
"A: The most common type involves a blind upper esophageal pouch with a fistula between the lower esophagus and trachea. True or False",
"B: It presents with polyhydramnios prenatally. True or False",
"C: The H-type fistula has no associated esophageal atresia. True or False",
"D: It results from incomplete division of the foregut by the tracheoesophageal septum. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 466,
"q": "Which of the following are features of congenital hypothyroidism?",
"opts": [
"A: It can result from thyroid dysgenesis or dyshormonogenesis. True or False",
"B: Newborn screening detects elevated TSH levels. True or False",
"C: Untreated congenital hypothyroidism causes cretinism. True or False",
"D: The thyroid gland descends from the base of the tongue during development. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 467,
"q": "Regarding cryptorchidism (undescended testes):",
"opts": [
"A: The testes normally descend into the scrotum by birth or within the first few months. True or False",
"B: Cryptorchidism increases the risk of testicular cancer. True or False",
"C: It is associated with infertility. True or False",
"D: Orchiopexy is recommended before 2 years of age. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 468,
"q": "Which of the following drugs are known teratogens?",
"opts": [
"A: Phenytoin. True or False",
"B: Lithium. True or False",
"C: Penicillin. True or False",
"D: Diethylstilbestrol (DES). True or False",
],
"ans": "Answers: A-True (fetal hydantoin syndrome), B-True (Ebstein's anomaly), C-False (generally safe in pregnancy), D-True (vaginal clear cell adenocarcinoma in daughters)",
},
{
"num": 469,
"q": "Regarding the critical period for teratogen exposure:",
"opts": [
"A: The pre-embryonic period (weeks 1-2) follows an 'all-or-nothing' rule. True or False",
"B: The embryonic period (weeks 3-8) is the most sensitive period for structural defects. True or False",
"C: The fetal period is insensitive to all teratogenic influences. True or False",
"D: The brain remains sensitive to teratogens throughout pregnancy. True or False",
],
"ans": "Answers: A-True, B-True, C-False (functional defects and growth restriction can still occur), D-True",
},
{
"num": 470,
"q": "Which of the following are correct about polyhydramnios?",
"opts": [
"A: It is defined as an excess of amniotic fluid above 2000 mL. True or False",
"B: Esophageal atresia is associated with polyhydramnios. True or False",
"C: Anencephaly is associated with polyhydramnios. True or False",
"D: Renal agenesis is associated with polyhydramnios. True or False",
],
"ans": "Answers: A-True, B-True (fetus cannot swallow), C-True (impaired swallowing), D-False (renal agenesis causes oligohydramnios)",
},
{
"num": 471,
"q": "Regarding the development of the urogenital system:",
"opts": [
"A: The indifferent gonad can develop into either a testis or ovary depending on genetic signals. True or False",
"B: In the absence of SRY, the indifferent gonad develops into an ovary. True or False",
"C: The Mullerian (paramesonephric) ducts form the uterus and uterine tubes in females. True or False",
"D: Testosterone from the fetal testis causes the Wolffian ducts to develop. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 472,
"q": "Which of the following are correct about the role of anti-Mullerian hormone (AMH)?",
"opts": [
"A: AMH is produced by Sertoli cells of the fetal testis. True or False",
"B: AMH causes regression of the Mullerian ducts in males. True or False",
"C: AMH is required for development of the Wolffian ducts. True or False",
"D: Absence of AMH in females allows the Mullerian ducts to persist. True or False",
],
"ans": "Answers: A-True, B-True, C-False (testosterone is required for Wolffian duct development, not AMH), D-True",
},
{
"num": 473,
"q": "Regarding congenital kidney malformations:",
"opts": [
"A: Horseshoe kidney results from fusion of the lower poles of both kidneys during ascent. True or False",
"B: Horseshoe kidney is trapped below the inferior mesenteric artery during ascent. True or False",
"C: Polycystic kidney disease can be autosomal dominant or recessive. True or False",
"D: Duplex kidney (duplex collecting system) is always symptomatic. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (many duplex kidneys are asymptomatic)",
},
{
"num": 474,
"q": "Which of the following are correct about the embryology of the face?",
"opts": [
"A: The face develops primarily from the frontonasal process and the first pharyngeal arch. True or False",
"B: The nasal placodes invaginate to form the nasal pits. True or False",
"C: The upper lip is formed by fusion of the medial nasal processes and maxillary processes. True or False",
"D: The primary palate is formed from the frontonasal process. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 475,
"q": "Regarding the development of the eye:",
"opts": [
"A: The optic vesicle develops as an outgrowth from the diencephalon. True or False",
"B: The lens is induced by the optic vesicle from the surface ectoderm. True or False",
"C: The retina is derived from neuroectoderm. True or False",
"D: Coloboma results from failure of the choroid fissure to close. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 476,
"q": "Which of the following are correct about the development of the ear?",
"opts": [
"A: The membranous labyrinth develops from the otic vesicle (otocyst). True or False",
"B: The ossicles of the middle ear are derived from pharyngeal arch cartilages. True or False",
"C: The malleus and incus are derived from the first pharyngeal arch. True or False",
"D: The stapes is derived from the second pharyngeal arch. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 477,
"q": "Regarding the embryology of the pancreas:",
"opts": [
"A: The pancreas develops from two buds - dorsal and ventral pancreatic buds. True or False",
"B: The ventral pancreatic bud rotates to fuse with the dorsal pancreatic bud. True or False",
"C: The main pancreatic duct (duct of Wirsung) is formed mainly from the ventral bud. True or False",
"D: Annular pancreas results from abnormal migration of the ventral pancreatic bud. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 478,
"q": "Which of the following are correct about the development of the liver?",
"opts": [
"A: The liver develops from a hepatic diverticulum from the foregut endoderm. True or False",
"B: The liver is the main site of hematopoiesis in the second trimester. True or False",
"C: Kupffer cells are derived from mesoderm/monocyte lineage. True or False",
"D: The septum transversum contributes to the formation of the diaphragm. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 479,
"q": "Regarding the development of the spleen:",
"opts": [
"A: The spleen is derived from mesoderm. True or False",
"B: The spleen develops from a condensation of mesenchyme in the dorsal mesogastrium. True or False",
"C: Accessory spleens (splenules) are common and clinically insignificant in most cases. True or False",
"D: The spleen is a retroperitoneal organ. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (the spleen is an intraperitoneal organ)",
},
{
"num": 480,
"q": "Which of the following correctly describe the embryology of the adrenal gland?",
"opts": [
"A: The adrenal cortex is derived from mesoderm. True or False",
"B: The adrenal medulla is derived from neural crest cells. True or False",
"C: The fetal adrenal cortex produces DHEA-S as a precursor for placental estrogen synthesis. True or False",
"D: The zona glomerulosa is the last zone of the adrenal cortex to develop. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (the zona reticularis develops last)",
},
{
"num": 481,
"q": "Which of the following are correct about the embryology of the thyroid gland?",
"opts": [
"A: The thyroid gland develops from an endodermal downgrowth from the tongue. True or False",
"B: The foramen cecum marks the origin of the thyroid. True or False",
"C: The thyroglossal duct normally obliterates. True or False",
"D: A thyroglossal cyst is the most common midline neck mass in children. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 482,
"q": "Regarding the embryology of the pituitary gland (hypophysis):",
"opts": [
"A: The anterior pituitary (adenohypophysis) develops from Rathke's pouch (oral ectoderm). True or False",
"B: The posterior pituitary (neurohypophysis) develops from a downgrowth of the diencephalon. True or False",
"C: Craniopharyngioma arises from remnants of Rathke's pouch. True or False",
"D: The posterior pituitary produces ADH and oxytocin. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (ADH and oxytocin are produced in the hypothalamus and transported to the posterior pituitary)",
},
{
"num": 483,
"q": "Which of the following are correct regarding the development of the cerebral cortex?",
"opts": [
"A: Neurons of the cerebral cortex are produced in the ventricular zone by neurogenesis. True or False",
"B: Cortical neurons migrate outward in an 'inside-out' pattern. True or False",
"C: Radial glia provide a scaffold for neuronal migration. True or False",
"D: Lissencephaly results from a defect in neuronal migration. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 484,
"q": "Which of the following are correct about the embryology of skeletal muscle?",
"opts": [
"A: Skeletal muscle is derived from myotomes of somites. True or False",
"B: Muscles of the limbs develop from somitic cells that migrate into the limb buds. True or False",
"C: Myoblasts are mononucleated precursor cells that fuse to form myotubes. True or False",
"D: Satellite cells maintain the ability to regenerate skeletal muscle in the adult. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 485,
"q": "Regarding the development of bone:",
"opts": [
"A: Endochondral ossification involves a cartilage template that is replaced by bone. True or False",
"B: Intramembranous ossification occurs directly within a fibrous connective tissue membrane. True or False",
"C: The skull vault bones form by intramembranous ossification. True or False",
"D: Long bones form primarily by intramembranous ossification. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (long bones form by endochondral ossification)",
},
{
"num": 486,
"q": "Which of the following are correct about the embryological basis of congenital hip dysplasia?",
"opts": [
"A: It is more common in females. True or False",
"B: Breech presentation is a risk factor. True or False",
"C: It has multifactorial inheritance. True or False",
"D: The Ortolani and Barlow tests are used for clinical screening. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 487,
"q": "Regarding spina bifida:",
"opts": [
"A: Spina bifida occulta involves only the vertebral arches without herniation of neural tissue. True or False",
"B: Meningocele involves herniation of meninges but not neural tissue. True or False",
"C: Myelomeningocele involves herniation of both meninges and neural tissue. True or False",
"D: Myelomeningocele is the least severe form of spina bifida. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (myelomeningocele is the most severe form)",
},
{
"num": 488,
"q": "Which of the following are correct about Potter sequence?",
"opts": [
"A: Bilateral renal agenesis is the classic underlying cause. True or False",
"B: Facial features include wide-set eyes, flattened nose, and low-set ears. True or False",
"C: Pulmonary hypoplasia is the major cause of death. True or False",
"D: It can result from prolonged premature rupture of membranes. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 489,
"q": "Which of the following are correct about the Wnt signaling pathway in embryology?",
"opts": [
"A: Wnt signals from the dorsal ectoderm are important for dorsoventral patterning of the neural tube. True or False",
"B: Wnt/beta-catenin signaling is important for anterior-posterior axis determination. True or False",
"C: Wnt signaling promotes osteogenesis. True or False",
"D: Wnt signaling is involved in limb patterning. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 490,
"q": "Regarding the embryological development of the diaphragm:",
"opts": [
"A: The diaphragm develops from four components: septum transversum, pleuroperitoneal membranes, body wall mesoderm, and dorsal mesentery of esophagus. True or False",
"B: The phrenic nerve is the motor nerve to the diaphragm and is derived from C3, C4, C5. True or False",
"C: The left pleuroperitoneal foramen closes later than the right, explaining why CDH is more common on the left. True or False",
"D: The septum transversum gives rise to the central tendon of the diaphragm. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
],
},
{
"section": "ADDITIONAL HISTOLOGY QUESTIONS",
"subsection": None,
"items": [
{
"num": 491,
"q": "Which of the following are correct about intercalated discs of cardiac muscle?",
"opts": [
"A: They contain both mechanical junctions (desmosomes and fascia adherens) and electrical junctions (gap junctions). True or False",
"B: Fascia adherens anchor actin filaments. True or False",
"C: Gap junctions allow direct electrical coupling between cardiomyocytes. True or False",
"D: Intercalated discs run perpendicular to the myofibrils. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 492,
"q": "Regarding the sarcoplasmic reticulum (SR) and T-tubules in skeletal muscle:",
"opts": [
"A: T-tubules are invaginations of the sarcolemma. True or False",
"B: In skeletal muscle, T-tubules are located at the A-I band junction. True or False",
"C: The SR stores and releases calcium for muscle contraction. True or False",
"D: In cardiac muscle, T-tubules are located at the Z-disc level. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 493,
"q": "Which of the following describe the histology of hyaline cartilage?",
"opts": [
"A: Hyaline cartilage contains type II collagen. True or False",
"B: The territorial matrix around chondrocytes stains intensely basophilic due to glycosaminoglycans. True or False",
"C: Hyaline cartilage is avascular. True or False",
"D: Hyaline cartilage has a perichondrium except at articular surfaces. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 494,
"q": "Regarding ground substance of connective tissue:",
"opts": [
"A: Ground substance includes glycosaminoglycans (GAGs) and proteoglycans. True or False",
"B: Hyaluronic acid is a GAG that is not covalently linked to a core protein. True or False",
"C: Aggrecan is a major proteoglycan in cartilage. True or False",
"D: Ground substance is not visible on routine H&E staining. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 495,
"q": "Which of the following correctly describe type I collagen?",
"opts": [
"A: It is the most abundant collagen in the body. True or False",
"B: It is found in bone, tendons, ligaments, and skin. True or False",
"C: It has a [Gly-Pro-Hyp]n repeating sequence. True or False",
"D: Defects in type I collagen cause Ehlers-Danlos syndrome type I. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (osteogenesis imperfecta is caused by type I collagen defects; classical EDS is caused by COL5A1/COL5A2 mutations)",
},
{
"num": 496,
"q": "Regarding osteogenesis imperfecta:",
"opts": [
"A: It is caused by defects in type I collagen. True or False",
"B: It presents with brittle bones and frequent fractures. True or False",
"C: Blue sclerae are a characteristic feature. True or False",
"D: It is always inherited in an autosomal dominant pattern. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (most forms are autosomal dominant, but recessive forms exist)",
},
{
"num": 497,
"q": "Which of the following are correct about reticular fibers?",
"opts": [
"A: Reticular fibers are composed of type III collagen. True or False",
"B: They are found in the framework of lymphoid organs, liver, and bone marrow. True or False",
"C: Reticular fibers stain black with silver impregnation (argyrophilic). True or False",
"D: Reticular fibers are visible on routine H&E staining. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (they are not clearly visible on H&E; special stains like silver are needed)",
},
{
"num": 498,
"q": "Regarding the histology of the skin:",
"opts": [
"A: The epidermis is a keratinized stratified squamous epithelium. True or False",
"B: The stratum basale contains melanocytes and Merkel cells. True or False",
"C: Langerhans cells are found in the stratum spinosum and function as antigen-presenting cells. True or False",
"D: The stratum lucidum is found only in thick skin. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-True",
},
{
"num": 499,
"q": "Which of the following are correct about mast cells?",
"opts": [
"A: Mast cells contain granules with histamine and heparin. True or False",
"B: Mast cells are derived from bone marrow precursors. True or False",
"C: Mast cells play a central role in type I hypersensitivity reactions. True or False",
"D: Mast cells and basophils are the same cell type. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (they are distinct cell types although similar in function and content)",
},
{
"num": 500,
"q": "Regarding plasma cells:",
"opts": [
"A: Plasma cells are terminally differentiated B lymphocytes. True or False",
"B: Plasma cells have a characteristic 'clockface' or 'cartwheel' chromatin pattern. True or False",
"C: Plasma cells produce antibodies. True or False",
"D: Plasma cells are abundant in germinal centers of lymph nodes. True or False",
],
"ans": "Answers: A-True, B-True, C-True, D-False (germinal centers contain proliferating B cells; plasma cells are more abundant in the medullary cords)",
},
],
},
]
current_section = None
current_subsection = None
for group in questions:
# Section header
if group["section"] and group["section"] != current_section:
current_section = group["section"]
story.append(Spacer(1, 8))
story.append(Paragraph(current_section, section_style))
story.append(HRFlowable(width="100%", thickness=0.8, color=colors.HexColor("#1a1a2e"), spaceAfter=6))
# Subsection header
if group["subsection"] and group["subsection"] != current_subsection:
current_subsection = group["subsection"]
story.append(Paragraph(current_subsection, subsection_style))
for item in group["items"]:
# Question
story.append(Paragraph(f"<b>Q{item['num']}. {item['q']}</b>", question_style))
# Options - each on its own line
for opt in item["opts"]:
story.append(Paragraph(opt, option_style))
# Answer
story.append(Paragraph(f"✓ {item['ans']}", answer_style))
story.append(Spacer(1, 4))
doc.build(story)
print(f"PDF saved to: {output_path}")
Running Command
cd /home/daytona/workspace/mcq-questions && python generate_pdf.py 2>&1
Running Command
ls -lh /home/daytona/workspace/mcq-questions/MCQ_Q366_to_Q500.pdf
Your PDF is ready. It contains all 135 questions (Q366-Q500) neatly formatted with each option on its own line and answers in green below each question.
MCQ Q366 to Q500
PDF Document · PDF
Contents of the PDF:
- Q366-375 - Adipose Tissue (continued)
- Q376-390 - Gametogenesis
- Q391-400 - Fertilization
- Q401-407 - Week 1 (Cleavage, Morula, Blastocyst)
- Q408-412 - Week 2 (Bilaminar Disc)
- Q413-420 - Week 3 (Gastrulation, Neurulation)
- Q421-430 - Weeks 4-8 (Organogenesis)
- Q431-440 - Fetal Period (Week 9 to Birth)
- Q441-490 - Birth Defects (Teratology)
- Q491-500 - Additional Histology (Cardiac muscle, Cartilage, Connective tissue, Skin)
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