Espiral AtlasExternal anal sphincter
musculus sphincter ani externus
Constricts the anal canal during peristalsis and withholds defecation; supports and fixes the perineal body and the pelvic floor.
In the full entry
The full entry, with every field, sources, quiz and clinical correlations, is in the atlas.
- Origin
- Insertion
- Innervation
- Blood supply
Related clinical cases
- Episiotomy and the muscles of the perineum
- Anorectal incontinence after childbirth
- Kegel exercises and the muscles of the female perineum