Lesser psoas muscle

About the lesser psoas muscle of the horse

Lesser psoas muscle is a muscle of the body (trunk), one on each side of the body. Its name in the Nomina Anatomica Veterinaria is Musculus psoas minor. You can turn it above, see it in place in the body of the horse, 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

The bodies of the last thoracic and the lumbar vertebrae.

Insertion

The psoas tubercle of the ilium.

Action

Flexes the pelvis on the loins and inclines it to its side.

Nerve

Ventral branches of the lumbar nerves.

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

Terminology

English

Lesser psoas muscle

Latin (NAV)

Musculus psoas minor

Status

A valid term in the Nomina Anatomica Veterinaria

Questions about the lesser psoas muscle

What is the Latin name of the lesser psoas muscle?

In the Nomina Anatomica Veterinaria, the lesser psoas muscle is called Musculus psoas minor.

Where is the lesser psoas muscle of the horse?

Lesser psoas muscle is a muscle of the body (trunk), one on each side of the body.

Where does the lesser psoas muscle originate and insert?

Origin: The bodies of the last thoracic and the lumbar vertebrae. Insertion: The psoas tubercle of the ilium.

What nerve supplies the lesser psoas muscle?

Ventral branches of the lumbar nerves.

What does the lesser psoas muscle do?

Flexes the pelvis on the loins and inclines it to its side.