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The chest cavity includes the heart and lungs. The abdominal cavity includes the liver, the stomach, and the small and large intestines. The two regions are separated by the diaphragm, the large dome-shaped muscle.
Review Date 4/6/2025
Updated by: Neil K. Kaneshiro, MD, MHA, Clinical Professor of Pediatrics, University of Washington School of Medicine, Seattle, WA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.
