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gastrin

[gas-trin] /ˈgæs trɪn/
noun
1.
a hormone that stimulates the secretion of gastric juice.
Origin
1900-1905
1900-05; gastr- + -in2
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for gastrin
  • gastrin is the major hormone that controls the release of acid in your stomach.
British Dictionary definitions for gastrin

gastrin

/ˈɡæstrɪn/
noun
1.
a polypeptide hormone secreted by the stomach: stimulates secretion of gastric juice
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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gastrin in Medicine

gastrin gas·trin (gās'trĭn)
n.
Any of the hormones secreted in the pyloric-antral mucosa of the stomach and that stimulate secretion of the parietal cells.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Article for gastrin

any of a group of digestive hormones secreted by the wall of the pyloric end of the stomach (the area where the stomach joins the small intestine) of mammals. Gastrin is a polypeptide. Released into the bloodstream when food enters the stomach, gastrin is carried by the circulatory system to the gastric cells in the stomach wall, where it triggers the secretion of gastric juice. This juice consists primarily of hydrochloric acid, which helps break apart fibrous matter in food and kills bacteria that may have been ingested, and pepsinogen, which is a precursor of the protein-splitting enzyme pepsin. Gastrin also increases the motility of the stomach, thereby helping to churn the food and eventually to empty the stomach; to a lesser degree, gastrin also increases the motility of the upper small intestine and the gallbladder.

Learn more about gastrin with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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