What hormone tells the gallbladder to contract and release its bile through the cystic duct to the common bile duct?
A) Gastrin
B) Cholecystokinin
C) Secretin
D) Pepsin

Question

Quizplus · Accepted Answer

When partially-digested lipids enter the duodenum, the duodenum's endocrine cells release cholecystokinin, which travels through the blood to its main target tissues-the gallbladder and the hepatopancreatic sphincter. Cholecystokinin tells the gallbladder to squeeze (contract), and release its bile through the cystic duct to the common bile duct. Cholecystokinin also tells the hepatopancreatic sphincter to relax so the bile in the common bile duct can enter the duodenum.

What Hormone Tells the Gallbladder to Contract and Release Its