Coccygeus muscle
| Coccygeus muscle | ||
|---|---|---|
 |
||
| Left Levator ani from within. | ||
| Latin | musculus coccygeus | |
| Gray's | subject #119 424 | |
| Origin: | Sacrospinous ligament | |
| Insertion: | ||
| Artery: | ||
| Nerve: | a branch from the fourth and fifth sacral nerves | |
| Action: | closing in the back part of the outlet of the pelvis | |
| Dorlands/Elsevier | m_22/12548603 | |
The Coccygeus is situated behind the levator ani.
It is a triangular plane of muscular and tendinous fibers, arising by its apex from the spine of the ischium and sacrospinous ligament, and inserted by its base into the margin of the coccyx and into the side of the lowest piece of the sacrum.
It assists the Levator ani and Piriformis in closing in the back part of the outlet of the pelvis.
See also
External links
- Template:Gray's
- SUNY Labs 43:16-0103 - "The Female Pelvis: Muscles of the Pelvic Diaphragm"
- Cross section at UV pelvis/pelvis-e12-15
- Norman/Georgetown pelvis (femalepelvicdiaphragm, malepelvicdiaphragm)
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
| List of muscles of torso | |
|---|---|
| BACK | splenius
(capitis, cervicis) -
erector spinae (iliocostalis,
longissimus, spinalis) - latissimus dorsi transversospinales: (semispinalis dorsi, semispinalis cervicis, semispinalis capitis, multifidus, rotatores) - interspinales - intertransversarii |
| SUBOCCIPITAL | rectus capitis posterior (major, minor) - obliquus capitis (inferior, superior) |
| CHEST | intercostales (external, internal, innermost) - subcostales - transversus thoracis - levatores costarum - serratus posterior (inferior, superior) - diaphragm |
| ABDOMEN | obliques (external, internal) - transversus abdominis - rectus abdominis - pyramidalis - cremaster - quadratus lumborum |
| PELVIS | levator ani (iliococcygeus, pubococcygeus, puborectalis) - coccygeus |
| PERINEUM | sphincter ani (externus, internus)
superficial perineal pouch (transversus perinei superficialis, bulbospongiosus, ischiocavernosus) deep perineal pouch (transversus perinei profundus, sphincter urethrae membranaceae) |
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