205textnotes47 - - released from duodenum 3) Secretin -...

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- movement of chyme out of stomach (antrum) and into the duodenum - regulated via reflexes that control the opening and closing of the pyloric sphincter - allows for the optimum time needed for digestion and absorption of duodenum - fast gastric emptying for carbohydrate meal - slow gastric emptying for fats meal Some Endocrine Secretions of the Small Intestine (Table 21-2): 1 ) Gastrin - peptide hormone from antrum and duodenum - stimulated by decreased [H + ] - stimulates increase in [H + ] from parietal cells 2 ) Cholecystokinin (CCK) - peptide hormone
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Unformatted text preview: - released from duodenum 3) Secretin - peptide hormone from duodenum and jejunum (small intestine) - stimulated by drop in pH in duodenal cells - stimulated by drop in pH in duodenal contents - inhibits parietal cells (stomach) small intestine- involved in digestion, absorption and secretion enteropeptidase ( Figure 20-7: secreted in brush border of duodenal epithelial cells converts the pancreatic proenzyme into trypsin which in turn converts other pancreatic proenzymes) trypsinogen ====== enteropeptidase ===> trypsin...
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This note was uploaded on 12/26/2011 for the course KIN 205 taught by Professor Blaber during the Fall '09 term at Simon Fraser.

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