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BookmarkThe gastrointestinal tract or digestive tract, also referred to as the GI tract or the alimentary canal or the gut, is the system of organs within multicellular animals which takes in food, digests it to extract energy and nutrients, and expels the remaining waste.
See also:
The GI tract differs substantially from animal to animal.
For instance, some animals have multi-chambered stomachs..
For more information about the topic Gastrointestinal tract, read the full article at Wikipedia.org, or see the following related articles:
Digestion — Digestion is the process whereby a biological entity processes a substance, in order to chemically convert the substance into nutrients. Digestion ... > read more
Stomach — In anatomy, the stomach is an organ in the gastrointestinal tract used to digest food. In general, the stomach's primary function is not the ... > read more
Esophagus — The esophagus (also spelled oesophagus/œsophagus), or gullet is an organ in vertebrates which consists of a muscular tube through which food ... > read more
Cells of the stomach — Parietal cells (also called oxyntic cells) are the stomach epithelium cells which secrete gastric acid. Parietal cells produce gastric acid ... > read moreNote: This page refers to an article that is licensed under the GNU Free Documentation License. It uses material from the article Gastrointestinal tract at Wikipedia.org. See the Wikipedia copyright page for more details.
