Coccygeus muscle
| Coccygeus muscle | |
|---|---|
Left levator ani from within. | |
| Details | |
| Origin | Sacrospinous ligament and ischial spine |
| Insertion | Lateral margin of coccyx and related border of sacrum |
| Nerve | Pudendal nerve; sacral nerves: S4, S5 or S3-S4 |
| Actions | Pulls coccyx forward after defecation, closing in the back part of the outlet of the pelvis |
| Identifiers | |
| Latin | musculus coccygeus |
| TA98 | A04.5.04.011 |
| TA2 | 2412 |
| FMA | 19088 |
| Anatomical terms of muscle | |
The coccygeus muscle or ischiococcygeus is a muscle of the pelvic floor located posterior to levator ani and anterior to the sacrospinous ligament.