Most potent stimulus for secretin is______________?
Correct answer: A. Acid chyme
- A. Acid chyme
- B. Dilattion of intestine
- C. Protein
- D. Fat
Explanation
Acidic chyme entering the duodenum is the strongest stimulus for secretin release from S cells. Secretin then promotes bicarbonate-rich pancreatic and biliary secretion to neutralize the acid.
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