alleryStart learning →The duodenum releases secretin. What does secretin make the pancreas produce?
ARelease a watery bicarbonate secretion
BRelease enzyme-rich juice into the duct
CRelease bile stored in the gallbladder
DSlow gastric emptying and gut motility
Answer & Solution
Correct answer: A. Release a watery bicarbonate secretion
1. Acidic chyme arriving in the duodenum triggers the release of secretin from the intestinal mucosa.
2. Secretin acts on the pancreas and stimulates a watery secretion of bicarbonate.
3. That bicarbonate is what buffers the acid arriving from the stomach.
4. Enzyme-rich pancreatic juice and gallbladder emptying are triggered by cholecystokinin, not secretin.
5. Slowing gastric emptying and motility is the job of gastric inhibitory peptide.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 23 "The Digestive System", section 23.2 Digestive System Processes and Regulation_
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