coccygeus muscle


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coc·cyg·e·us mus·cle

[TA]
striated pelvic muscle associated with the deep (pelvic) aspect of the sacrospinous ligament, forming part of the pelvic diaphragm; origin, spine of ischium and sacrospinous ligament; insertion, sides of lower part of sacrum and upper part of coccyx; action, with the sacrospinous ligament assists in support of pelvic floor, theoretically increasingly so when intra-abdominal pressures increase; nerve supply, third and fourth sacral.

coc·cyg·e·us mus·cle

(kok-sij-ē'ŭs mŭs'ĕl) [TA]
Origin, spine of ischium and sacrospinous ligament; insertion, sides of lower part of sacrum and upper part of coccyx; action, assists in support of pelvic floor, especially when intraabdominal pressures increase; nerve supply, third and fourth sacral.
Synonym(s): musculus coccygeus [TA] , coccygeal muscle, ischiococcygeus, musculus ischiococcygeus.

coccygeus

pertaining to the tail.

coccygeus muscle
forms part of the pelvic diaphragm; important in the cause and surgical repair of perineal hernia in dogs.
References in periodicals archive ?
The relevant anatomy including the ischial spine, the sacrospinous ligament, the coccygeus muscle, and the lateral side wall with White's line, is identified (Fig.
In all cases the lesion was located within the retrorectal space, which is defined anteriorly by the rectum, posteriorly by the sacrum, superiorly by the peritoneal reflection, inferiorly by the elevator ani and coccygeus muscle, and laterally by the ureters and iliac vessels.
The pudendal nerve arises from sacral nerves S2-S4 and, after passing between the piriformis and coccygeus muscles, leaves the pelvis through the distal part of the greater sciatic foramen.