Sphincter Ani Externus
Keeps anal canal and anus closed, aids in expulsion of feces. Located in the torso.
- Actions
- keeps anal canal and anus closed, aids in expulsion of feces
- Origin
- -
- Insertion
- -
- Innervation
- S4 and twigs from inferior anal nerves of pudendal nerve
- Blood supply
- inferior rectal artery