The contraction of gall bladder is due to

(a) gastrin

(b) secretin

(c) cholecystokinin

(d) enterogasterone

Audio Explanation:

(c) Cholecystokinin (also called pancreozymin) is a hormone of mucosa of small intestine. It is released
in response to chyme. It causes pancreas to release pancreatic enzymes and gall bladder to eject bile.

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