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Upper gastrointestinal system

Upper gastrointestinal system

Overview

The upper gastrointestinal organs include the mouth, esophagus and stomach.

Review Date 8/26/2023

Updated by: Jatin M. Vyas, MD, PhD, Associate Professor in Medicine, Harvard Medical School; Associate in Medicine, Division of Infectious Disease, Department of Medicine, Massachusetts General Hospital, Boston, MA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.