Coccygeus muscle

Coccygeus muscle
Coccygeus muscle
Left Levator ani from within.
Latin musculus coccygeus
Gray's subject #119 424
Origin Sacrospinous ligament and ischial spine
Insertion    Lateral margin of coccyx and related border of sacrum
Nerve sacral nerves: S4, S5 [1][2] or S3-S4[3]
Actions pulls coccyx forward after defecation, closing in the back part of the outlet of the pelvis

The Coccygeus is a muscle of the pelvic wall (i.e. peripheral to the pelvic floor), located posterior to levator ani and anterior to the sacrospinous ligament.

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.

In combination with the levator ani, it forms the pelvic diaphragm.

It assists the levator ani and piriformis in closing in the back part of the outlet of the pelvis.

See also


  1. ^ Essential Clinical Anatomy. K.L. Moore & A.M. Agur. Lippincott, 2 ed. 2002. Page 217
  2. ^ LUC coc
  3. ^ "". Retrieved 2007-12-09. 

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 As such, some of the information contained within it may be outdated.

Wikimedia Foundation. 2010.

Игры ⚽ Нужно сделать НИР?

Look at other dictionaries:

  • coccygeus muscle — ▪ anatomy       muscle of the lower back that arises from the ischium (lower, rear portion of the hipbone) and from the ligaments that join the spinal column and the sacrum (triangular bone at the base of the spine). It is attached to the lower… …   Universalium

  • coccygeus — See c. muscle. * * * coc·cyg·e·us käk sij ē əs n, pl coc·cyg·ei jē .ī a muscle arising from the ischium and sacrospinous ligament and inserted into the coccyx and sacrum called also coccygeus muscle, ischiococcygeus * * * coc·cyg·e·us (kok sijґe… …   Medical dictionary

  • Muscle — is the tissue of the body which primarily functions as a source of power. There are three types of muscle in the body. Muscle which is responsible for moving extremities and external areas of the body is called "skeletal muscle." Heart… …   Medical dictionary

  • Muscle — For other uses of Muscle , see Muscle (disambiguation). A top down view of skeletal muscle Muscle (from Latin …   Wikipedia

  • Rectus abdominis muscle — Rectus abdominis The human rectus abdominis muscle. Latin musculus rectus abdominis Gray s …   Wikipedia

  • Cremaster muscle — The cremaster muscle appears as a thin layer just superficial to the tunica vaginalis. Latin musculus cremaster Gray s …   Wikipedia

  • Pubococcygeus muscle — Muscles of the lower abdomen. Latin musculus pubococcygeus Gray s …   Wikipedia

  • Abdominal internal oblique muscle — Muscles of the trunk …   Wikipedia

  • Abdominal external oblique muscle — Muscles of the trunk …   Wikipedia

  • Quadratus lumborum muscle — The relations of the kidneys from behind. (Quadratus lumborum visible at lower left.) …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”