Rectus capitis posterior major

  • The rectus capitis posterior major (also rectus capitis posterior major muscle, latin: musculus rectus capitis posterior major) is one of the suboccipital muscles that acts at the atlanto-occipital joint.

    The rectus capitis posterior major originates from the spinous process of the axis (C2) and inserts on the inferior nuchal line on the external surface of the occipital bone.

    The main actions provided by the rectus capitis posterior major are ipsilateral rotation and extension of the head.

    The rectus capitis posterior major is innervated by the dorsal ramus of the 1st cervical spinal nerve (C1), also known as the suboccipital nerve.