Iliococcygeus muscle

Iliococcygeus muscle
Left Levator ani from within.
Latin musculus iliococcygeus
Gray's subject #119 424
Origin ischial spine and from the posterior part of the tendinous arch of the obturator fascia
Insertion    coccyx and anococcygeal raphé
Artery
Nerve
Actions

The Iliococcygeus arises from the inner side of the ischium and from the posterior part of the tendinous arch of the obturator fascia, and is attached to the coccyx and anococcygeal raphé; it is usually thin, and may fail entirely, or be largely replaced by fibrous tissue. It is part of the levator ani group of muscles.

An accessory slip at its posterior part is sometimes named the Iliosacralis.

External links

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.