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Summarize the main effects that ACh, gastrin, secretin, CCK, and GIP each have on the digestive...

Summarize the main effects that ACh, gastrin, secretin, CCK, and GIP each have on the digestive system.

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Answer #1

ACh: Acetylcholine. It stimulates parietal cells to secrete hydrochloric acid and intrinsic factor; mucus secretion of the mucus cells of the digestive tract, and it stimulates gastric chief cells to secrete pepsinogen (a digestive enzyme)..

Gastrin: It´s a hormone that stimulates the secretion of pepsinogen (from gastric glands) and it also stimulates the parietal cells to secret hydrochloric acid and intrinsic factor.

Secretin: A hormone that signals the secretion of sodium bicarbonate in the pancreas and stimulates the secretion of bile in the liver.

On the duodenum:

CCK: Hormone Cholecystokinin. It stimulates the release of digestive enzimes in the pancreas and the emptying of bile from the gall bladder.

GIP: Gastric inhibitory peptide. It´s a hormone that decreases the stomach churning in order to slow down the emptying of the stomach.

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