Two primary duodenal hormones affect the release and composition of pancreatic juice. Name these two hormones and briefly describe their role in the release and composition of pancreatic juice.

The two primary duodenal hormones that affect the release and composition of pancreatic juice are secretin and cholecystokinin (CCK). Secretin stimulates the secretion of bicarbonate ions to neutralize acidic chyme, while CCK stimulates the secretion of digestive enzymes for the breakdown of carbohydrates, fats, and proteins.

Explanation:

The duodenum, the first part of the small intestine, plays a crucial role in the digestion process. It receives partially digested food from the stomach and releases hormones that regulate the secretion of pancreatic juice. Two primary duodenal hormones involved in this process are secretin and cholecystokinin (CCK).

Secretin is released in response to the presence of acidic chyme in the duodenum. It acts on the pancreas to stimulate the secretion of bicarbonate ions from the pancreas. Bicarbonate ions help neutralize the acidic chyme entering the duodenum, creating a more favorable environment for digestion.

Cholecystokinin (CCK) is released in response to the presence of fats and proteins in the duodenum. It stimulates the secretion of digestive enzymes from the pancreas, including amylase, lipase, and proteases. These enzymes are necessary for the breakdown of carbohydrates, fats, and proteins in the small intestine.

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