| secretin | <hormone> Peptide hormone of gastrointestinal tract (27 residues) found in the mucosal cells of duodenum. Stimulates pancreatic, pepsin and bile secretion, inhibits gastric acid secretion. Considerable homology with gastric inhibitory peptide, vasoactive intestinal peptide and glucagon. (18 Nov 1997) |
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| secretin test | <investigation> A test of pancreatic exocrine function, variably performed and standardised, in which the bicarbonate, amylase, and volume of the duodenal aspirate are measured after intravenous administration of secretin. (05 Mar 2000) |
| hormone, secretin | Hormone made by glands in the small intestine that stimulates pancreatic secretion. The word hormone was coined by the english physiologists wm. M. Bayliss and ernest h. Starling in connection with their discovery of secretin, the first hormone, in 1902. (12 Dec 1998) |