Coccygeus muscle

About the coccygeus muscle of the dog

Coccygeus muscle is a muscle of the hips and pelvis (pelvis), one on each side of the body. Its name in the Nomina Anatomica Veterinaria is Musculus coccygeus. You can turn it above, see it in place in the hips and pelvis of the dog, and open it inside the whole animal in Vetomica.

Where it runs from and to

A muscle is told apart from its neighbours by what it takes hold of at each end, which is also what decides what it does when it shortens.

Origin

Ischiatic spine on the inner side of the pelvis.

Insertion

Transverse processes of roughly the second through fifth caudal vertebrae.

Action

Swings the tail to one side; acting together they clamp the tail down over the anus.

Nerve

Ventral branches of the last sacral spinal nerve.

Written for Vetomica in its own words from the standard reference anatomy of the dog; the books it was checked against are listed below.

What it works on

Bones it takes hold of

• Ischium
• Caudal vertebrae

Muscles and ligaments it works with

• Levator muscle of the anus
• Iliocaudalis
• Sacrotuberous ligament
• Obturatorius internus
• Lateral ventral sacrocaudal muscle
• Intertransversarii ventrales caudae
• Gluteus superficialis

Terminology

English

Coccygeus muscle

Latin (NAV)

Musculus coccygeus

Status

A valid term in the Nomina Anatomica Veterinaria

References

Where to read this structure in full, and where the named parts above were read.

• NAV 2017Myologia: Diaphragma pelvis; Splanchnologia: Musculi perinei
• Miller's Anatomy of the Dog, 5th ed.The Muscular System: muscles of the pelvic diaphragm; The Urogenital System: perineum
• Dyce, Sack & WensingThe pelvis and reproductive organs of the dog and cat

Questions about the coccygeus muscle

What is the Latin name of the coccygeus muscle?

In the Nomina Anatomica Veterinaria, the coccygeus muscle is called Musculus coccygeus.

Where is the coccygeus muscle of the dog?

Coccygeus muscle is a muscle of the hips and pelvis (pelvis), one on each side of the body.

Which bones does the coccygeus muscle attach to?

Coccygeus muscle takes hold of Ischium and Caudal vertebrae.

Where does the coccygeus muscle originate and insert?

Origin: Ischiatic spine on the inner side of the pelvis. Insertion: Transverse processes of roughly the second through fifth caudal vertebrae.

What nerve supplies the coccygeus muscle?

Ventral branches of the last sacral spinal nerve.

What does the coccygeus muscle do?

Swings the tail to one side; acting together they clamp the tail down over the anus.