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Rectus capitis lateralis

Other Terms: Lateral rectus capitis, Musculus rectus capitis lateralis, Muscle droit latéral de la tête

Muscle parts

None

Latin name

Musculus rectus capitis lateralis

Latin muscle parts

None

Group

Cervical wall – lateral musculature – middle layer (Suboccipital)

Etymology

The English name for this muscle is the straight muscle of the head at the side. The word rectus is Latin for “straight.” The word capitis comes from the Latin caput meaning “head.” Lateral is from the Latin latus meaning “side.”

Origin

Superior margin of the transverse process of the atlas

Insertion

Jugular process of the occipital bone

Action

Weakly assists with lateral flexion of the head. Probably is a postural muscle that helps monitor the heads position and movement.

Nerve supply

Branches of the cervical ventral rami (C1 and C2)

Blood supply

The muscle receives blood from the ascending cervical artery, which is a small branch of the inferior thyroid artery from the thyrocervical trunk of the subclavian artery. It also receives blood from the muscular branches of the vertebral artery. The muscle also receives small muscular branches from the occipital artery as it passes it lateral aspect.

Latin

Musculus rectus capitis lateralis

French

Muscle droit latéral de la tête

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