External oblique muscle of the abdomen

Musculus obliquus externus abdominis

Compresses the abdomen and flexes the trunk.

System
Muscle
Region
Trunk
Sides
Paired: left and right
External oblique muscle of the abdomen (Musculus obliquus externus abdominis) of the cat, left side: a three-quarter view of the muscle.

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 last nine or ten ribs, interdigitating with the serratus ventralis, and the thoracolumbar fascia.
Insertion
By its aponeurosis into the linea alba and the prepubic tendon.
Action
Compresses the abdomen and flexes the trunk.
Nerve
Ventral branches of the caudal thoracic and the lumbar nerves.

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

Terminology

English
External oblique muscle of the abdomen
Latin (NAV)
Musculus obliquus externus abdominis
Status
A valid term in the Nomina Anatomica Veterinaria
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