Superficial transverse perineal muscle

Superficial transverse perineal muscle

Infobox Muscle
Latin = musculus transversus perinei superficialis
GraySubject = 120
GrayPage = 427

Caption = Median sagittal section of pelvis, showing arrangement of fasciæ. (Transversus perinei superficialis visible at bottom right.)

Caption2 = The superficial branches of the internal pudendal artery. (Transversus perinei labeled at center left.)
Origin = anterior part of ischial tuberosity
Insertion = central point of perineum
Blood =
Nerve = pudendal nerve
Action = Fixation of central tendon of perineum, support of pelvic floorSaladin (2003), "Muscles of the Pelvic Floor", p 354]
MeshName =
MeshNumber =
DorlandsPre = m_22
DorlandsSuf = 12551265
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 front.

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.




* cite book
title = Anatomy & Physiology: The Unity of Form and Function
first = Kenneth S. | last = Saladin
year = 2003 | edition = 3rd
publisher = McGraw−Hill

External links

* - "The Female Perineum: Muscles of the Superficial Perineal Pouch"

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