Obliquus capitis superior muscle

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Obliquus capitis superior muscle
Obliquus capitis superior muscle06.png
Skull seen from behind (obliquus capitis superior shown in red)
Suboccipital triangle dissection - Obliquus capitis superior muscle.png
Obliquus capitis superior (red) and its relationship to other suboccipital muscles.
Latin Musculus obliquus capitis superior
Gray's p.402
Origin Lateral mass of atlas
Insertion Lateral half of the inferior nuchal line
Nerve Suboccipital nerve
Actions Extends head and flex head to the ipsilateral side
TA A04.2.02.006
FMA FMA:32527
Anatomical terms of muscle

The obliquus capitis superior muscle (/əˈblkwəs ˈkæpɨtɨs/) is a small muscle in the upper back part of the neck. It arises from the lateral mass of the atlas bone. It passes superiorly and posteriorly to insert into the lateral half of the inferior nuchal line on the external surface of the occipital bone. The muscle is innervated by the suboccipital nerve, the dorsal ramus of the first spinal nerve.

It acts at the atlanto-occipital joint to extend the head and flex the head to the ipsilateral side.

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References[edit]

This article incorporates text from a public domain edition of Gray's Anatomy.

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