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Gastrointestinal

Gastrointestinal and the Gastrointestinal tract refer to the stomach and intestine, and sometimes to all the structures from the mouth to the anus. The tract may also be divided into foregut, midgut, and hindgut, reflecting the embryological origin of each segment of the tract. The GI tract releases hormones as to help regulate the digestion process. These hormones include gastrin, secretin, cholecystokinin, and grehlin.