Secretin is a hormone produced by___________?
Correct answer: D. Duodenum
- A. Stomach
- B. Liver
- C. Pancreas
- D. Duodenum
Explanation
Secretin is released by S cells in the duodenal lining when acidic chyme enters from the stomach. It stimulates pancreatic bicarbonate secretion, helping neutralize the acid in the small intestine. The likely alternative is the pancreas because the pancreas responds to secretin, but it does not produce this hormone.
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