Question at position 15 What is the primary function of somatostatin?Stimulates gastric acid secretionInhibits the release of various hormones and regulates gastrointestinal motilityStimulates appetite and promotes fat storageStimulates pancreatic enzyme secretion

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Question restatement: What is the primary function of somatostatin?
Options:
1) Stimulates gastric acid secretion
2) Inhibits the release of various hormones and regulates gastrointestinal motility
3) Stimulates appetite and promotes fat storage
4) Stimulates pancreatic enzyme secretion

Option 1: Stimulates gastric acid secretion. This is incorrect because somatostatin actually inhibits many secretion processes, including gastric acid release. It acts as a broad inhibitory hormone in the GI tract, helping to slow down digestive activity rather than stimulate it.

Option 2: Inhibits the release of various hormones and regulates gastrointestinal motility. This statement accurately reflects the known role of somatostatin. It suppresses the release of several hormones (like growth hormone, thyroid-stimulating hormone, insulin, glucagon) and modulates GI motility and secretions, thereby acting as a general brake on digestion and hormonal activity.

Option 3: Stimulates appetite and promotes fat storage. This option is incorrect. Appetite stimulation and fat storage are primarily influenced by other hormones and signals (e.g., ghrelin, insulin, leptin pathways). Somatostatin is not a promoter of appetite or adiposity; in fact, its inhibitory actions tend to dampen digestive processes.

Option 4: Stimulates pancreatic enzyme secretion. This is false. Somatostatin inhibits pancreatic secretions, including enzymes, as part of its overall inhibitory influence on exocrine pancreatic function and other digestive secretions.

In summary, the correct interpretation is that somatostatin functions mainly to inhibit the release of various hormones and to regulate gastrointestinal motility, aligning with option 2. The other choices describe effects opposite to somatostatin’s inhibitory role or mix in processes that somatostatin does not promote.

Question at position 15 What is the primary function of somatostatin?Stimulates gastric acid secretionInhibits the release of various hormones and regulates gastrointestinal motilityStimulates appetite and promotes fat storageStimulates pancreatic enzyme secretion

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