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Cholecystokinin (CCK)

A hormone released in the small intestine that causes muscles in the gallbladder and the colon to tighten and relax.

PubMed Health Glossary
(Source: NIH - National Institute of Diabetes and Digestive and Kidney Diseases)

Terms to know

Colon (Bowel)
The longest part of the large intestine, which is a tube-like organ connected to the small intestine at one e...
Gallbladder
The organ that stores the bile made in the liver and that is connected to the liver by bile ducts. The gallbl...
Small Intestine
The organ where most digestion occurs. It measures about 20 feet and includes the duodenum, jejunum, and ileu...

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