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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About Chemical Coordination and Hormones
Chemical coordination uses hormones released by endocrine glands and carried in blood to specific target cells. Coverage includes the pituitary, thyroid, pancreas, adrenal glands, ovaries and testes, feedback control, and the contrast between slower, longer-lasting hormonal responses and rapid nervous coordination.
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