Which peptide is released in response to the presence of food in the intestine?

Cholecystokinin (CCK) is a peptide hormone that plays a crucial role in the digestive system. It is released by the cells in the intestinal mucosa, particularly in response to the presence of fats and proteins in the food that enters the intestine. The primary functions of CCK include stimulating the gallbladder to contract and release bile, promoting the secretion of digestive enzymes from the pancreas, and slowing gastric emptying to enhance digestion and nutrient absorption. This response to food intake highlights CCK’s essential role in facilitating the digestive process and regulating appetite. Its release is a key part of the body's mechanism to respond to food intake, ensuring that digestion occurs efficiently.