Multiple Choice Questions on Organogenesis

By | December 29, 2023

1. Which process involves invagination and involution leading to formation of organ rudiments?
A. Neurulation
B. Gastrulation
C. Organogenesis
D. Histogenesis

2. Which organ develops from endodermal lung bud outgrowth?
A. Heart
B. Liver
C. Lung
D. Pancreas

3. Which organ develops from gut regionalization?
A. Liver
B. Lung
C. Pancreas
D. All of the above

4. Which organs develop from intermediate mesoderm?
A. Kidney
B. Gonads
C. Adrenal glands
D. All of the above

5. Cardiac jelly forms what cellular layer?
A. Myocardium
B. Endocardium
C. Epicardium
D. Endothelium

6. Apoptosis eliminates which tissue connection?
A. Umbilical vein
B) Urachus
C) Pharyngeal pouches
D) Allantois

7. Which organ forms from umbilical vesicleOutgrowth?
A. Liver
B) Lung
C) Pancreas
D) Urinary bladder

8. Atrial ventricular canal arises from which layer?
A. Endocardium
B. Myocardium
C. Epicardium
D. Mesothelium

9. Formation of external genitalia involves which process?
A) Proximodistal outgrowth
B) Confluence
C) Fusion
D) Canalization

10. Limb buds emerge from which embryonic region?
A. Thorax
B. Abdminal
C. Cervical
D. Lumbar

11. Sensory placodes form which structures?
A. Lens of eye
B. External ear
C. Taste buds
D) Olfactory epithelium

12. Intestinal perforation occurs at which site?
A) Caecum
B) Appendix
C) Lower esophagus
D) Lower anal canal

13. Which organ develops from endodermal outpocketing?
A. Pancreas
B. Lung
C. Liver
D. Urinary bladder

14. Neuroepithelial bodies form in which organ?
A) Lung
B) Liver
C) Pancreas
D) Kidney

15. Kidney develops from which cell population?
A. Ureteric bud
B. Nephrogenic cord
C. Nephrotomes
D. Mesonephric tubules

16. Germ cells originate from which region?
A) Extraembryonic mesoderm
B) Urogenital ridge
C) neural crest
D) Dorsal mesogastric mesenchyme

17. Development of thyroid gland involves which process?
A) Bifurcation
B) Budding
C) Canalization
D) Creeping

18. Which structures arise from placodes?
A) Seminiferous tubules
B) Auditory ossicles
C) Olfactory epithelium
D) Paramesonephric duct

19. At which stage do palate shelves reorient horizontally?
A) 6 weeks
B) 7 weeks
C) 8 weeks
D) 9 weeks

20. Ganglia of enteric nervous system arise from which crest?
A) Cranial crest
B) Vagal crest
C) Sacral crest
D) Branchial crest

21. Epithelial buds form which organ?
A) Liver
B) Respiratory tree
C) Pancreas
D) Kidney

22. Which cells contribute to distal lung epithelium?
A) Alveolar cells
B) Goblet cells
C) Clara cells
D) Ciliated cells

23. Pituitary gland originates from which region?
A) Nasal placode
B) Buccopharyngeal membrane
C) Rathke’s pouch
D) Frontonasal prominence

24. Which organ develops outside embryo proper?
A) Lung
B) Liver
C) Pancreas
D) Placenta

25. Kidney develops from which embryonic region?
A) Lateral plate mesoderm
B) Intermediate mesoderm
C) Paraxial mesoderm
D) Mesodermal germ cells

26. Duct system of which organ forms before secretory tissue?
A) Liver
B) Lung
C) Pancreas
D) Thyroid

27. Which cells form islets of Langerhans?
A) Hepatocytes
B) Acinar cells
C) Ductal cells
D) Beta cells

28. Which organs develop from visceral yolk sac?
A) Liver
B) Pancreas
C) Lung
D) Urinary bladder

29. Which structures form due to contact with endodermal outgrowth?
A) Limb musculature
B) Lung bronchi
C) Pancreatic acini
D) Kidney tubules

30. Branching morphogenesis occurs in which organ?
A) Liver
B) Lung
C) Pancreas
D) Kidney

31. Formation of primitive gut pattern involves which process?
A) Dilatation
B) Regionalisation
C) Canalization
D) Segmentation

32. Which enzyme is required for intestine perforation?
A) Collagenase
B) Keratinase
C) Hyaluronidase
D) Fibrolysin

33. At which stage do umbilical veins degenerate?
A) Day 21
B) Day 28
C) Day 35
D) Day 42

34. Notochord induces formation of which tissue?
A) Somites
B) Vertebrae
C) Intervertebral discs
D) Kidney

35. Respiratory diverticulum arise from which location?
A) Pharyngeal pouches
B) Lung buds
C) Kidney anlagen
D) Liver diverticulum

36. Airway epithelial lineage contains which cell types?
A) Keratinocytes, goblet, ciliated, basal cells
B) Hepatocytes, cholangiocytes, Kupffer cells
C) Acinar, ductal, islet cells
D) Proximal, loop of Henle, distal tubule cells

37. Fusion of which structures forms palatine shelves?
A) Maxillary processes
B) Mandibular processes
C) Tongue
D) Palatine processes

38. S-shaped body stage marks which organogenesis?
A) Pancreas
B) Liver
C) Lung
D) Kidney

39. Neural crest cells contribute to which organ?
A) Adrenal medulla
B) Thyroid follicles
C) Enteric nervous system
D) All of the above

40. Which embryonic region contributes to urogenital system?
A) Surface ectoderm
B) Lateral plate mesoderm
C) Intermediate mesoderm
D) Proximal mesoderm