Health Topics

Anal Manometry

There are two small muscles in the anus (opening from the rectum) that help to control bowel movements. These muscles are known as internal and external sphincters (sfink-ters). (Figures 1 and 2)  

These muscles are normally closed to prevent uncontrolled leakage of bowel movements. To have a bowel movement, these muscles must relax and open at the same time. Anal manometry is a test that studies how these muscles are working.   

Anal ManometryAnal Manometry

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Before the Test

During the Test

What Your Child Will Experience

After the Test


Last Updated: 10/2012