Development of Digestive System MCQ Quiz | Embryology

1. The celiac trunk is the primary artery supplying the derivatives of which embryonic structure?

2. During development, the stomach rotates 90 degrees clockwise around its longitudinal axis. This rotation results in the original left side becoming the:

3. The physiological umbilical herniation of the midgut loop occurs during which period of gestation?

4. The total rotation of the midgut loop around the superior mesenteric artery is:

5. Annular pancreas is a congenital anomaly that results from a developmental error of the:

6. The lesser omentum and the falciform ligament are remnants of the:

7. Meckel’s diverticulum, a common congenital anomaly of the small intestine, represents a remnant of the:

8. Hirschsprung’s disease (congenital megacolon) is caused by the failure of which cells to migrate into the wall of the hindgut?

9. The urorectal septum divides the cloaca into the urogenital sinus anteriorly and which structure posteriorly?

10. The spleen develops within the mesenchyme of the:

11. The liver parenchyma (hepatocytes) and the lining of the biliary ducts are derived from:

12. An omphalocele is characterized by the herniation of abdominal contents through the umbilical ring, covered by:

13. The anal canal has a dual origin. The upper two-thirds are derived from the hindgut, while the lower one-third is derived from the:

14. The “double-bubble” sign on an abdominal X-ray of a newborn is a classic indicator of which condition?

15. The uncinate process and the inferior part of the head of the pancreas are derived from which embryological structure?

16. The pectinate line of the anal canal marks the transition between:

17. Which of the following structures is NOT a derivative of the midgut?

18. Gastroschisis is a ventral body wall defect characterized by herniation of abdominal viscera, typically to the:

19. Failure of recanalization of the gut tube during the embryonic period most commonly leads to:

20. The Kupffer cells (stellate macrophages) within the liver sinusoids are derived from:

21. The proximal part of the duodenum is supplied by branches of the celiac trunk, while the distal part is supplied by branches of the superior mesenteric artery. This dual blood supply reflects its origin from:

22. Congenital hypertrophic pyloric stenosis is characterized by marked thickening of which muscle layer?

23. Which of the following is a derivative of the hindgut?

24. The omental bursa (lesser sac) is formed by the rotation of the stomach and the growth of the:

25. A tracheoesophageal fistula is an abnormal connection between the trachea and esophagus, often associated with esophageal atresia. This defect arises from an abnormal partitioning of the: