The gastrointestinal system is comprised of the stomach, and the small and large intestines. It is responsible for breaking down and absorbing the food a person eats.
Review Date 8/22/2016
Updated by: Laura J. Martin, MD, MPH, ABIM Board Certified in Internal Medicine and Hospice and Palliative Medicine, Atlanta, GA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.