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Coccygeus muscle



Coccygeus muscle
Left Levator ani from within.
Latin musculus coccygeus
Gray's subject #119 424
Origin: Sacrospinous ligament
Insertion:
Artery:
Nerve: sacral nerves: S4-S5,[1] or S3-S4[2]
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

  • Coccyx
  • Coccydynia (coccyx pain, tailbone pain)
  • Pubococcygeus muscle

References

  1. ^ LUC coc
  2. ^ uams.edu. Retrieved on 2007-12-09.

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 As such, some of the information contained herein may be outdated.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.

v • d • e
List of muscles of torso
BACKsplenius (capitis, cervicis) - erector spinae (iliocostalis, longissimus, spinalis) - latissimus dorsi
transversospinales: (semispinalis dorsi, semispinalis cervicis, semispinalis capitis, multifidus, rotatores) - interspinales - intertransversarii
SUBOCCIPITALrectus capitis posterior (major, minor) - obliquus capitis (inferior, superior)
CHESTintercostales (external, internal, innermost) - subcostales - transversus thoracis - levatores costarum - serratus posterior (inferior, superior) - diaphragm
ABDOMENanterior/lateral wall: obliques (external, internal) - transversus abdominis - rectus abdominis - pyramidalis

posterior wall: quadratus lumborum - psoas major/psoas minor - iliacus

cremaster
PELVIS/FLOORlevator ani (iliococcygeus, pubococcygeus, puborectalis) - coccygeus
PERINEUManal triangle: sphincter ani (externus, internus)

superficial perineal pouch (superficial transverse perineal, bulbospongiosus, ischiocavernosus)

deep perineal pouch (deep transverse perineal, sphincter urethrae membranaceae)
 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Coccygeus_muscle". A list of authors is available in Wikipedia.
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