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Unformatted text preview: moderate inhibition of stomach contraction to allow adequate time for digestion of fats in the upper intestinal tract-Secretin Secreted by the S cells in the mucosa of the duodenum in response to acidic gastric juice emptying into the duodenum from the stomach Major function mild effect on the motility of the GI tract and acts to promote pancreatic secretion of bicarbonate -Gastric inhibitory peptide Secreted by the mucosa of the upper small intestine, mainly in response to fatty acids and amino acids but to a lesser extent in response to carbohydrates Major function mild effect in decreasing motor activity of the stomach and therefore slow the emptying of gastric contents into the duodenum-Motilin Secreted by the upper duodenum during fasting Major function increases gastrointestinal motility...
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- Winter '11