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[koh-luh-sis-tuh-kahy-nin, kol-uh-] /ˌkoʊ ləˌsɪs təˈkaɪ nɪn, ˌkɒl ə-/

a hormone secreted by the upper portion of the intestine that stimulates contraction of the gallbladder and increases secretion of pancreatic juice.
Abbreviation: CCK.
a hormone secreted by duodenal cells that stimulates the contraction of the gall bladder and secretion of pancreatic enzymes Also called pancreozymin

cholecystokinin cho·le·cys·to·ki·nin (kō’lĭ-sĭs’tə-kī’nĭn)
Abbr. CCK
A polypeptide hormone produced principally by the small intestine in response to the presence of fats, causing contraction of the gallbladder, release of bile, and secretion of pancreatic digestive enzymes. Also called pancreozymin.


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