The effect of cholecystokinin is to
A) stimulate the liver to produce bile.
B) stimulate the liver to release bile.
C) cause contraction of the gallbladder to release bile.
D) inhibit the production of bile in the liver.

Question

Quizplus · Accepted Answer

Cholecystokinin (CCK) is a hormone that is released from the small intestine in response to the presence of fat and protein in the duodenum. Its main effect is to stimulate the contraction of the gallbladder, which releases stored bile into the small intestine to aid in the digestion and absorption of fats. Although CCK indirectly stimulates bile production in the liver by increasing the flow of bile acids from the liver to the duodenum, it does not directly stimulate the liver to produce bile. Therefore, the best choice is C - cause contraction of the gallbladder to release bile.

The Effect of Cholecystokinin Is to