ANATOMY
GASTRO INTESTINAL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A 10-year old boy consumes a cheeseburger, fries, and chocolate shake. The meal stimulates the release of several gastrointestinal hormones. The presence of fat, carbohydrate, or protein in the duodenum stimulates the release of which of the following hormones from the duodenal mucosa?
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Cholecytokinin (CCK)
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Glucose-dependent insulinotropic peptide (GIP)
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Gastrin
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Secretin
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Motilin
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Explanation:
Detailed explanation-1: -The presence of fat, such as oleate, in the meal results in stimulation of cholecystokinin (CCK) secretion in the duodenum; in turn, this inhibits antral motility, stimulates pyloric tone and delays gastric emptying [8]. CCK is the first of a repertoire of hormones that regulate gastric emptying.
Detailed explanation-2: -As food enters the stomach, acid secretion is further stimulated by distension of the gastric wall as well as by the presence of food and certain beverages. Other factors, such as caffeine, alcohol, and luminal calcium also stimulate HCl secretion.
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