Coccygeus
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Original Editor - Innocent Abugu
Top Contributors - Innocent Abugu and Kim Jackson
Description[edit | edit source]
Coccygeus also known as ischiococcygeus is a sheet of triangular-shaped muscle located posterior to the levator ani muscles an anterior to the sacrospinous ligament in the pelvic floor. The coccygeus, together with the levator ani, forms the pelvic diaphragm.
Origin[edit | edit source]
It originates from the ischial spine.
Insertion[edit | edit source]
The fibers insert into the lateral aspect of the coccyx an into the side of the lowest piece of the sacrum.
Nerve[edit | edit source]
The anterior rami of S4 an S5.
Artery[edit | edit source]
Internal pudendal and inferior gluteal artery.
Function[edit | edit source]
- It supports the pelvic viscera.
- It flexes the coccyx.
- It weakly aids the puborectalis to control urination an defecation especially when there is an increase in intra-abdominal pressure.
