Obliquus capitis superior muscle
The obliquus capitis superior muscle (/ /) is a small muscle in the upper back part of the neck and is one of the suboccipital muscles and part of the suboccipital triangle. 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.
|Obliquus capitis superior muscle|
Skull seen from behind (obliquus capitis superior shown in red)
Obliquus capitis superior (red) and its relationship to other suboccipital muscles.
|Origin||Lateral mass of atlas|
|Insertion||Lateral half of the inferior nuchal line|
|Actions||Extends head and flex head to the ipsilateral side|
|Latin||Musculus obliquus capitis superior|
|Anatomical terms of muscle|
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- Anatomy figure: 01:07-06 at Human Anatomy Online, SUNY Downstate Medical Center