Obliquus capitis superior muscle
| Obliquus capitis superior muscle | |
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| Deep muscles of the back. (Obliq. super. labeled at upper left.) | |
| Latin | musculus obliquus capitis superior |
| Gray's | subject #116 402 |
| Origin | lateral mass of atlas |
| Insertion | lateral half of the inferior nuchal line |
| Artery | |
| Nerve | suboccipital nerve |
| Actions | |
The Obliquus capitis superior muscle 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. It 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.
[edit] Additional images
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Occipital bone. Outer surface.
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Base of skull. Inferior surface.
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Obliquus capitis superior's relationship to other suboccipital muscles.
[edit] External links
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.
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