Cholecystokinin

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Cholecystokinin

Cholecystokinin (pronounced: koh-leh-sis-toh-KY-nin), often abbreviated as CCK, is a hormone that is produced by cells in the duodenum and stimulates the release of bile into the intestine and the secretion of enzymes by the pancreas.

Etymology

The term "cholecystokinin" comes from the Greek words chole, meaning "bile", kystis, meaning "sac", and kinin, meaning "move". Thus, the term literally translates to "move the bile sac".

Function

Cholecystokinin is secreted by cells of the upper small intestine. Its secretion is stimulated by the introduction of hydrochloric acid, fatty acids, or other acidic products into the stomach. It acts to slow gastric emptying and stimulates the contraction of the gallbladder and the release of pancreatic enzymes into the small intestine. It also acts as a hunger suppressant.

Related Terms

  • Gallbladder: A small, pear-shaped organ located just below the liver. It stores bile produced by the liver and releases it into the small intestine to aid in the digestion of fat.
  • Pancreatic enzymes: Enzymes produced by the pancreas that help to break down carbohydrates, proteins, and fats in the small intestine.
  • Duodenum: The first part of the small intestine, where most chemical digestion takes place.
  • Hormone: A chemical substance produced in the body that controls and regulates the activity of certain cells or organs.

See Also

External links

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