Superficial part of external anal sphincter
Pars superficialis sphincteris externi ani
- Related terms: Superficial part
Definition
Description:
The superficial, constituting the main portion of the muscle, arises from a narrow tendinous band, the anococcygeal raphé, which stretches from the tip of the coccyx to the posterior margin of the anus; it forms two flattened planes of muscular tissue, which encircle the anus and meet in front to be inserted into the central tendinous point of the perineum, joining with the Transversus perinaei superficialis, the Levator ani, and the Bulbocavernosus.
