coccygeus muscle

The Coccygeus is a muscle of the pelvic wall (i.e. peripheral to the pelvic floor), situated behind the levator ani and in front of 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. It assists the Levator ani and Piriformis in closing in the back part of the outlet of the pelvis. [WP,unvetted]. Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the coccygeus muscle is

The Coccygeus is a muscle of the pelvic wall (i.e. peripheral to the pelvic floor), situated behind the levator ani and in front of 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. It assists the Levator ani and Piriformis in closing in the back part of the outlet of the pelvis. [WP,unvetted]. The atlas records it as a muscle at the organ scale in the human body.

Where the coccygeus muscle is

It sits in the pelvis and trunk, within the muscular system. Positioned deliberately as part of this species body plan.

What the coccygeus muscle connects to

The atlas records 5 typed relationships for it, across 4 kinds of connection. part of material anatomical entity.

Supply and innervation

Innervation: sacral nerve.

Also called

Also recorded as coccygeus, ischiococcygeus, musculus ischiococcygeus and musculus coccygeus. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0001327, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• Part of: material anatomical entity.
• A kind of: anatomical structure and muscle of pelvis.
• Innervated by: sacral nerve.
• originates from: ischial spine.

Questions

Where is the coccygeus muscle?

It sits in the pelvis and trunk, within the muscular system. Positioned deliberately as part of this species body plan.

What does the coccygeus muscle connect to?

Part of: material anatomical entity.

Is the coccygeus muscle the same in other species?

Leumas holds the same relationship vocabulary for every species it carries, so where another dataset records this structure you can put the two side by side on /compare.