Rectus capitis anterior muscle

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Rectus capitis anterior muscle

The Rectus capitis anterior muscle is a small muscle located in the neck. It plays a crucial role in the movement and stabilization of the head.

Anatomy

The Rectus capitis anterior muscle originates from the anterior surface of the atlas (C1 vertebra), specifically from the lateral mass and the root of the transverse process. It inserts into the basilar part of the occipital bone of the skull.

Function

The primary function of the Rectus capitis anterior muscle is to flex the head at the atlanto-occipital joint. This action helps in nodding the head forward. Additionally, it assists in stabilizing the head during various movements.

Innervation

The muscle is innervated by branches from the ventral rami of the C1 and C2 spinal nerves.

Blood Supply

The blood supply to the Rectus capitis anterior muscle is provided by branches of the vertebral artery and the ascending pharyngeal artery.

Clinical Significance

Dysfunction or injury to the Rectus capitis anterior muscle can lead to neck pain and limited range of motion in the head. It may also contribute to conditions such as tension headaches and cervical spine disorders.

Related Muscles

The Rectus capitis anterior muscle works in conjunction with other muscles in the neck, including the Rectus capitis lateralis muscle, Longus capitis muscle, and Longus colli muscle.

See Also

• Atlas (C1 vertebra)
• Occipital bone
• Atlanto-occipital joint
• Cervical spine