Our Health Library information does not replace the advice of a doctor. Please be advised that this information is made available to assist our patients to learn more about their health. Our providers may not see and/or treat all topics found herein.
Digestive system
The digestive system is responsible for breaking down food, absorbing nutrients from the food, and ridding the body of waste products from the food. The digestive system consists of the:
- Upper digestive tract, which includes the mouth, esophagus, stomach, and first part of the small intestine.
- Lower digestive tract, which includes the last part of the small intestine, the large intestine, and the rectum.
- Liver, pancreas, and gallbladder.
Current as of: May 1, 2026
Author: WebMD Ignite Staff
Clinical Review Board
All WebMD Ignite education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.
This information does not replace the advice of a doctor. WebMD Ignite disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use and Privacy Policy. Learn how we develop our content.
To learn more about WebMD Ignite, visit webmdignite.com.
© 2024-2026 WebMD Ignite.