Multiple choice

The release of pancreatic juice from the pancreas, in a mammal, is stimulated by ____.

  1. trypsinogen

  2. secretin

  3. enterokinase

  4. cholecystokinin
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Secretin is the primary hormone that stimulates the pancreas to secrete pancreatic juice (rich in bicarbonate to neutralize acidic chyme). It is released from S cells in the duodenum when acidic chyme enters the small intestine. Trypsinogen is a pancreatic enzyme precursor, enterokinase activates trypsinogen, and cholecystokinin stimulates enzyme secretion but fluid/bicarbonate secretion is mainly secretin-driven.

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