“SPHINCTER” на російській мові

This rapidly closes the duodenal sphincter to contain the stomach contents.

It is girdled by the external anal sphincter , a striated muscle structure that is part of the pelvic floor musculature.

Anal manometry is performed to assess the anal sphincter , pelvic floor, and associated nerves.

Then your brain tells your pelvic floor muscles to relax and your sphincter (the opening at the neck of your bladder) to open.

the anal sphincter