Describe the 3 primary functions of CCK.

Answer

Cholecystokinin (CCK) is a hormone produced by the small intestine that plays a vital role in digestion. Based on the provided image, its three primary functions are: 1. Pancreatic Enzyme Secretion: CCK stimulates the pancreas to secrete digestive enzymes into the duodenum, which are necessary for the breakdown of proteins, fats, and carbohydrates. 2. Gallbladder Contraction: CCK triggers the gallbladder to contract, which releases stored bile into the small intestine. Bile is essential for the emulsification and absorption of fats. 3. Inhibition of Gastric Activities: CCK slows down the emptying of the stomach (gastric emptying) and inhibits gastric acid secretion. This ensures that the small intestine has enough time to effectively digest and absorb the nutrients from the food entering from the stomach.