Medical Dictionary

...................................................................Back to HOME

sphincter
A ring-shaped muscle that relaxes or tightens to open or close a passage or opening in the body. Examples are the anal sphincter (around the opening of the anus) and the pyloric sphincter (at the lower opening of the stomach).

Multi-Sensory Brain Stimulator

This information provided for educational purposes only and does not constitute medical advice.
For medical questions, Consult a physician.