The hormone which stimulates constriction of gall bladder

Question

The hormone which stimulates constriction of gall bladder (A) gastrin (B) secretin (C) glucagon (D) cholecystokinin

Tardigrade Admin · Accepted Answer

Cholecystokinin (CCK) stimulates the gallbladder to rhythmic contraction and these result in an increase in the rate of bile into duodenum.

Q. The hormone which stimulates constriction of gall bladder