HUMAN PHYSIOLOGY
DIGESTION AND ABSORPTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Gastrin
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Peptide
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CCK
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Secretin
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Detailed explanation-1: -Secretin stimulates the secretion of bicarbonate-rich pancreatic fluid.
Detailed explanation-2: -Control and Physiologic Effects of Secretin The principal target for secretin is the pancreas, which responds by secreting a bicarbonate-rich fluid, which flows into the first part of the intestine through the pancreatic duct.
Detailed explanation-3: -What triggers the release of secretin from the small intestine?-The presence of acidic, fatty chyme in the small intestine causes the release of secretin.-This, in turn, inhibits further entry of stomach contents into the intestine until the fat has been emulsified and the pH raised.
Detailed explanation-4: -Secretin stimulates the secretion of a bicarbonate-rich pancreatic fluid (45). Secretin enters the blood stream or intestinal lumen and stimulates bicarbonate secretion (by interacting with pancreatic ductal cells), which neutralizes the pH of the gastric chyme upon entering the small intestine (83, 84).