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NEET UG BIOLOGY MCQ: CHEMICAL COORDINATION AND INTEGRATION

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Cholecystokinin is secretion of
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Correct option: A
Duodenum that causes contraction of gall bladder
Option A (Duodenum that causes contraction of gall bladder) is correct because Cholecystokinin (CCK) is secreted by the duodenum and stimulates the contraction of the gallbladder, releasing bile to aid in digestion.

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