What is one of the functions of cholecystokinin (CCK)?

Cholecystokinin (CCK) plays a crucial role in the digestive system, particularly regarding the regulation of gastric emptying. One of its key functions is to inhibit premature gastric emptying. CCK is released from the small intestine in response to the presence of fats and proteins in the chyme. By slowing down the rate at which the stomach empties its contents into the small intestine, CCK helps ensure optimal digestion and nutrient absorption.

This inhibition allows for a more gradual release of food into the intestine, providing additional time for digestive enzymes to break down complex nutrients. By regulating the timing of gastric emptying, CCK also contributes to satiety signals, helping to inform the brain when the body has received enough food, which can help prevent overeating.

In contrast, the other options related to functions such as stimulating gastric acid production, increasing appetite, or enhancing glucose secretion do not accurately describe the primary role of CCK, as its main effects are associated with lipid and protein digestion and the modulation of gastric emptying.