Gastric Function
The following are classification of gastric function tests except: A.
What our notes say
- The following are classification of gastric function tests except: A. (Medical Biochemistry Exam Study Guide — MCQs & Long Answers — MCQ Bank)
- CCK and secretin also inhibit gastric function, and somatostatin is inhibitory, not stimulatory. (Medical Physiology Paper I — Exam III, Q1–50 (Part 4 of 5) — Past Paper)
- Gastric function tests are employed to evaluate acid secretion, mucosal integrity, and hormonal regulation of the stomach. (Clinical Biochemistry: LAQs and SAQs — Past Paper)
Study material on Gastric Function
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Practice questions on Gastric Function
Which of the following statements about GIT hormones affecting gastric function is correct?
- A. Gastrin is the only hormone that stimulates gastric acid secretion.
- C. Somatostatin acts primarily to stimulate gastrin release.
- B. Secretin, CCK, and GIP all inhibit gastric acid secretion and/or motility.
- D. Histamine directly inhibits parietal cell acid secretion.
Answer: C. Secretin, Cholecystokinin (CCK), and Gastric Inhibitory Peptide (GIP) are all enterogastrones, hormones released from the small intestine that inhibit gastric acid secretion and/or gastric motility, to allow the small intestine time to process incoming chyme. Gastrin is a major stimulant, but not the only one (e.g., histamine, ACh). Somatostatin inhibits gastrin release and acid secretion. Histamine stimulates, not i
About the GIT hormones affecting gastric function: - (
- Gastrin secretion is stimulated by the digestive products of fat.
- GIP and VIP inhibit gastric secretion.
- Gastrin inhibits gastric secretion and delays gastric emptying.
- Somatostatin is a powerful stimulator to both gastric secretion and motility.
- CCK and Secretin increase both gastric secretion and motility.
Answer: B. GIP (Glucose-dependent Insulinotropic Peptide) and VIP both inhibit gastric secretion. CCK and secretin inhibit gastric function, while gastrin stimulates it.
Regarding the GIT hormones affecting gastric function, which statement is TRUE?
- GIP is primarily involved in protein digestion.
- Gastrin is inhibited by high gastric pH.
- CCK enhances gastric emptying.
- Secretin stimulates gastric acid secretion.
Answer: D. Secretin is released in response to acid and inhibits gastric acid secretion. Gastrin is stimulated by increased gastric pH. CCK slows gastric emptying. GIP (Gastric Inhibitory Peptide) is involved in regulating gastric secretion and motility, not primarily protein digestion.
Regarding GIT hormones affecting gastric function, which statement is correct?
- CCK stimulates gastric acid secretion.
- Secretin stimulates gastric acid secretion.
- GIP inhibits gastric emptying.
- Gastrin stimulates gastric acid secretion.
Answer: D. Gastrin is a potent stimulator of gastric acid secretion from parietal cells. CCK and secretin generally inhibit gastric emptying and acid secretion, while GIP also inhibits gastric emptying.
About the GIT hormones affecting gastric function, which is correct?
- Gastrin inhibits gastric emptying
- Secretin stimulates gastric acid secretion
- GIP (Gastric Inhibitory Peptide) stimulates insulin release
- CCK increases gastric motility
Answer: C. GIP, also known as Glucose-dependent Insulinotropic Peptide, stimulates insulin release from the pancreas in response to glucose.
Regarding GIT hormones affecting gastric function, which statement is true?
- Gastrin inhibits gastric emptying
- Secretin stimulates parietal cell secretion
- Cholecystokinin (CCK) slows gastric emptying
- GIP increases gastric motility
Answer: C. CCK inhibits gastric emptying to ensure adequate time for fat digestion in the duodenum.