Obliquus capitis superior

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

    The obliquus capitis superior originates from the transverse process of the atlas (C1) and inserts onto the lateral half of the inferior nuchal line on the outer surface of the occipital bone.

    By bilateral contraction the obliquus capitis superior extends the head, and by unilateral contraction flexes the head to the ipsilateral side.

    The obliquus capitis superior is innervated by the suboccipital nerve - the dorsal ramus of the 1st cervical spinal nerve (C1).