The esophagus carries food from the mouth to the stomach. The lower esophageal sphincter is a muscular ring at the junction of the esophagus and the stomach. The lower esophageal sphincter relaxes when food from the esophagus enters the stomach.
UPHS Contact Us
Site Map Privacy
The University of Pennsylvania Health System, Philadelphia, PA 1-800-789-PENN ©
2015, The Trustees of the University of Pennsylvania