The pancreas contains exocrine cells that secrete digestive enzymes into the , and clusters of endocrine cells called pancreatic islets, which secrete insulin and , to regulate blood glucose levels.

The pancreas secretes digestive enzymes in the slender instincts, these enzymes produce endocrine secretions through the hormones and pass through the blood. Endocrine cells called pancreatic islets secrete insulin and glucagon and have endocrine functions that are formed through the hormones and pass through the bloodstream.

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