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Reference Terms
from Wikipedia, the free encyclopedia

Gastrointestinal tract

The 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.

Note:   The above text is excerpted from the Wikipedia article "Gastrointestinal tract", which has been released under the GNU Free Documentation License.
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