Which of the following is the function of Gastric inhibitory peptide (GIP).
A
Stimulates the secretion of hydrochloric acid and pepsinogen.
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B
It inhibits gastric secretion and motility.
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C
Stimulates secretion of insulin from pancreas.
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D
Both b and c.
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Solution
The correct option is D Both b and c. Gastric inhibitory peptide (GIP) is hormone secreted by endocrine cells of the gastrointestinal tract. It inhibits the secretion of gastric juice and gastric motility. It is also responsible for secretion of insulin from pancreas. When glucose enters the small intestine it triggers the cells of intestinal lining which secrets GIP. GIP then stimulates the release of insulin from the pancreas. Gastrin hormone acts on gastric glands and stimulates the secretion of hydrochloric acid and pepsinogen.