GI Hormones & Enteric Nervous System — Gastrointestinal Physiology

GI Hormones & Enteric Nervous System MCQs: practice questions

Sample GI Hormones & Enteric Nervous System multiple-choice questions from Gastrointestinal Physiology.

1. Secretin primarily increases pancreatic:

   • A. Enzyme secretion only
   • B. HCO3− secretion
   • C. HCl secretion
   • D. Gastrin secretion
   • E. Pepsinogen secretion

2. CCK causes the gallbladder to:

   • A. Secrete HCl
   • B. Relax
   • C. Stop filling
   • D. Contract
   • E. Absorb bile acids

3. Gastrin also has a trophic effect on the:

   • A. Renal cortex
   • B. Gastric mucosa
   • C. Pancreatic islets only
   • D. Colon only
   • E. Esophageal sphincter

4. In Zollinger–Ellison syndrome, gastric H+ secretion is:

   • A. Dependent only on secretin
   • B. Decreased
   • C. Absent
   • D. Unchanged in all cases
   • E. Increased

5. The major stimulus for secretin release is:

   • A. H+ in the duodenum
   • B. H+ in the stomach
   • C. Oral glucose only
   • D. Gastric distention
   • E. Low plasma Ca2+

6. Somatostatin inhibits:

7. Secretin is secreted by:

8. CCK causes relaxation of the:

9. CCK is secreted by:

10. GIP also:

11. The strongest luminal stimuli for CCK release are:

12. The enteric nervous system can coordinate GI function:

13. GI Hormones & Enteric Nervous System 30 questions • Five related options • One best answer • Explanation 1. Gastrin is secreted primarily by:

14. Gastrin increases gastric:

15. Parasympathetic stimulation of the GI tract generally:

16. The vagal neurotransmitter that stimulates G cells to release gastrin is:

17. Zollinger–Ellison syndrome is caused by a tumor that secretes excess:

18. A major stimulus for gastrin secretion is:

19. Gastrin secretion is inhibited when gastric luminal pH is:

20. Sympathetic stimulation of the GI tract generally:

21. The submucosal (Meissner) plexus primarily regulates:

22. The hormone that mediates the fasting migrating myoelectric complex is:

23. The myenteric (Auerbach) plexus primarily regulates:

24. A patient with Hirschsprung disease has absence of the:

25. GIP is secreted mainly by cells in the:

26. Secretin decreases:

27. Nitric oxide in the GI tract acts mainly as:

28. CCK inhibits:

29. Secretin also increases:

30. An oral glucose load stimulates GIP, which increases: