Answer :
Final answer:
Cholecystokinin (CCK) is a hormone that stimulates the gallbladder to contract and release bile, and signals the pancreas to secrete digestive enzymes when fat and protein enter the small intestine. It aids in neutralizing the acidity of partially digested food and assists in breaking down food particles. CCK also has a role in managing hunger by acting as a hunger suppressant.
Explanation:
Cholecystokinin (CCK) is a hormone that plays a crucial role in digestion. It is secreted in the duodenum, the first section of the small intestine, in response to the intake of food, specifically proteins and fats. The release of CCK stimulates the contraction of the gallbladder, leading to the release of bile into the duodenum.
Aside from this, CCK prompts the pancreas to secrete an enzyme-rich pancreatic juice and an alkaline bicarbonate solution. The bicarbonate solution helps to neutralize the acidic chyme (partly digested food) that enters the duodenum from the stomach. The enzyme-rich pancreatic juice, on the other hand, contains several enzymes—including pancreatic lipase—that aid in the digestion of proteins, carbohydrates, and fats.
CCK plays a double role not only in breaking down food particles but also in regulating hunger. When released, CCK travels to the brain, acting as a hunger suppressant.
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