Anal sphincter muscles
Encyclopedia
Anal sphincter muscles can refer to:
- Sphincter ani externus muscleSphincter ani externus muscleThe Sphincter ani externus is a flat plane of muscular fibers, elliptical in shape and intimately adherent to the integument surrounding the margin of the anus.-Anatomy:...
- Sphincter ani internus muscleSphincter ani internus muscleThe Sphincter ani internus is a muscular ring that surrounds about 2.5 cm of the anal canal; its inferior border is in contact with, but quite separate from, the Sphincter ani externus....