Upper and lower gastrointestinal tract
The major organs of the human gastrointestinal system.
The major organs of the human gastrointestinal system are identified in this drawing. The upper gastrointestinal tract consists of the esophagus, stomach, and duodenum. The lower gastrointestinal tract includes most of the small intestine and all of the large intestine. According to some sources, it also includes the anus.
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"Digestive system diagram edit."
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