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The juice contains a number of important digestive enzymes, including trypsin, chymotrypsin, carboxypeptidase, lipase, and amylase. Pancreatic juice is alkaline in nature because of a high concentration of bicarbonate ions; this helps to neutralize the acidic gastric juice from the stomach.
Exocrine Secretions of the Pancreas. Pancreatic juice is composed of two secretory products critical to proper digestion: digestive enzymes and bicarbonate. The enzymes are synthesized and secreted from the exocrine acinar cells, whereas bicarbonate is secreted from the epithelial cells lining small pancreatic ducts.