Obliquus Capitis Superior


 



Description
[edit | edit source]

Musculus obliquus capitis superior is a member of the suboccipital group of muscles along with Obliquus capitis inferior, Rectus capitis posterior major & Rectus capitis Posterior minor. It is narrow below, wide and expanded above, and is lateral to semispinalis capitis. It forms the superolateral border of the suboccipital triangle.[1]


Origin[edit | edit source]

superior surface of the transverse process of the atlas (C1)[2]


Insertion[edit | edit source]

Between the superior and inferior nuchal lines of the occipital bone[2]


Nerve Supply[edit | edit source]

Suboccipital nerve or dorsal ramus of cervical spinal nerve (C1)[3]


Blood Supply[edit | edit source]

The muscle receives its blood supply from the vertebral artery and the deep descending branch of the occipital artery.[3]

Action[edit | edit source]

Bilaterally they extend the head; unilaterally they laterally flex the the head to the same side as the muscle.[2]


Function[edit | edit source]

A postural muscle that monitors the position of the head.[3]


Recent Related Research (from Pubmed)[edit | edit source]

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References[edit | edit source]

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  1. Gray's Anatomy of Human Body, Bartleby.com edition. New York: 2000. fckLRhttp://www.bartleby.com/107/116.html
  2. 2.0 2.1 2.2 http://www.wheelessonline.com/ortho/obliquus_capitis_superior_1
  3. 3.0 3.1 3.2 http://www.anatomyexpert.com/structure_detail/5212/