Contraction of gallbladder is caused by

inhibin

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gastrin

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cholecystokinin

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none of these

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Solution

The correct option is C cholecystokinin
Fatty acids in the lumen of the duodenum stimulate endocrine cells to release the hormone cholecystokinin (CCK). Cholecystokinin stimulates the gallbladder to contract and release stored bile into the intestine. It also stimulates the secretion of pancreatic juice.

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