The pancreas is a unique gland that engages both the exocrine and endocrine systems. Enzymes that break down lipids, proteins, and other molecules come from exocrine functions. The region of the pancreas known as the Islets of Langerhans produces insulin, glucagon, and somatostanin. These secretions serve endocrine functions. Insulin and glucagon regulate blood sugar; somatostanin influences production of the other secretions.

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