Answer :
Final answer:
Cholecystokinin (CCK) is a hormone released by the small intestine in response to the presence of fats in the duodenum. It stimulates the contraction of the gall bladder, increases pancreatic secretions rich in digestive enzymes, and relaxes the hepatopancreatic sphincter.
Explanation:
Cholecystokinin (CCK) is a hormone released by the small intestine in response to the presence of fats in the duodenum. It plays a crucial role in the digestion and absorption of fats. Regarding the options given, the action of CCK that is NOT correct is b. Decreased parietal cell secretions. CCK primarily stimulates the contraction of the gall bladder, increasing the release of bile into the duodenum to aid in fat digestion. It also inhibits gastric emptying and motility of the stomach to allow enough time for the digestive process, and it relaxes the hepatopancreatic sphincter to facilitate the flow of bile and pancreatic enzymes into the duodenum.
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