Digestive system/Definition

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Digestive system [r]: A group of organs stretching from the mouth to the anus, serving to break down foods, assimilate nutrients, and eliminate waste; in humans, it includes the gastrointestinal tract and its accessory glands and structures: liver, biliary tract and pancreas

This definition is at least in part based on: Anonymous (2023), Digestive system (English). Medical Subject Headings. U.S. National Library of Medicine.