Rotatores muscles - Musculi rotatores

Description

Rotatares Longi

 

Origin: Medial surface of the multifidus muscle.

Insertion: From the transverse processes of the tenth to the first thoracic vertebrae.

Action: Rotation of the greater cranial portion of the thoracic vertebral column about the longitudinal axis in unilateral action; otherwise, fixation.

Nerve: Medial branches of the rami dorsales of the thoracic nerves.

 

Rotatares Brevis

 

Origin: Medial surface of the multifidus muscle.

Insertion: Spinous processes of the first through tenth thoracic vertebrae.

Action: Rotation of the greater cranial portion of the thoracic vertebral column about the longitudinal axis in unilateral action; otherwise, fixation.

Nerve: Medial branches of the rami dorsales of the thoracic nerves


Text by Antoine Micheau, MD - Copyright IMAIOS

Images

Download vet-Anatomy

Mobile and tablet users, you can download on Appstore or GooglePlay.

vet-Anatomy on Appstore vet-Anatomy on Googleplay