Diagram of the gastrointestinal tract (or digestive tract), showing the location of the mouth, esophagus, stomach, small intestine, illeum, large intestine (colon), rectum, and anus. Taken from http://digestive.niddk.nih.gov/ddiseases/pubs/barretts/ archive copy at the Wayback Machine.

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Derivative works of this file:  Digestivetract.es.png