The Transversus perinei superficialis
(Transversus perinei; Superficial transverse perineal muscle) is a narrow muscular slip, which passes more or less transversely across the perineal space
in front of the anus
Origin and insertion
It arises by tendinous fibers from the inner and forepart of the tuberosity of the ischium
, and, running medialward, is inserted into the central tendinous point of the perineum, joining in this situation with the muscle of the opposite side, with the Sphincter ani externus
behind, and with the Bulbocavernosus
In some cases, the fibers of the deeper layer of the Sphincter ani externus decussate in front of the anus and are continued into this muscle. Occasionally it gives off fibers, which join with the Bulbocavernosus of the same side.
Variations are numerous. It may be absent or double, or insert into Bulbocavernosus or External sphincter.
- Saladin, Kenneth S. (2003). Anatomy & Physiology: The Unity of Form and Function. 3rd, McGraw−Hill.
- - "The Female Perineum: Muscles of the Superficial Perineal Pouch"