GENERAL HISTOLOGY

Detailed explanation-1: -When fats and proteins enter your small intestine, cholecystokinin triggers your gallbladder and pancreas to contract. They deliver bile and enzymes to your duodenum to help break down the food for absorption.

Detailed explanation-2: -Cholecystokinin (CCK) is released from mucosal endocrine cells in the proximal small intestine in response to a meal[1], and it is classically known to stimulate the gallbladder contraction.

Detailed explanation-3: -Cholecystokinin plays a key role in facilitating digestion within the small intestine. It is secreted from mucosal epithelial cells in the first segment of the small intestine (duodenum), and stimulates delivery into the small intestine of digestive enzymes from the pancreas and bile from the gallbladder.

Detailed explanation-4: -Cholecystokinin stimulates the gallbladder to contract and release stored bile into the intestine. It also stimulates the secretion of pancreatic juice and may induce satiety.