| 词条 | Coccygeus muscle |
| 释义 |
| Name = Coccygeus muscle | Latin = musculus coccygeus | Image = Gray404.png | Caption = Left Levator ani from within. | Origin = Sacrospinous ligament and ischial spine | Insertion = Lateral margin of coccyx and related border of sacrum | Blood = | Nerve = Pudendal nerve; sacral nerves: S4, S5[1] or S3-S4[2] | Action = pulls coccyx forward after defecation, closing in the back part of the outlet of the pelvis }} The Coccygeus is a muscle of 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
References{{Gray's}}1. ^Essential Clinical Anatomy. K.L. Moore & A.M. Agur. Lippincott, 2 ed. 2002. Page 217 2. ^{{cite web |url=http://anatomy.uams.edu/AnatomyHTML/muscles_pelvis&perineum.html |title=uams.edu |accessdate=2007-12-09 |work=}} External links
1 : Muscles of the torso |
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