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Question

Contraction of gall bladder is carried by

A
Citric acid and acetyl Co-A
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B
Gastrin
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C
Cholecystokinin
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D
None of the above
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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). CCK stimulates contractions in the smooth muscle of the gallbladder. CCK causes relaxation of the sphincter of Oddi, allowing bile release into the duodenum.

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