Suboccipital triangle
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| Suboccipital triangle | |
|---|---|
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| Deep muscles of the back. (Triangle is not labeled, the three muscles composing the triangle are visible at upper left, at the neck.) | |
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| Posterior atlantoöccipital membrane and atlantoaxial ligament. (Triangle is not labeled, but region is visible.) | |
| Gray's | subject #116 402 |
| Dorlands/Elsevier | t_17/12821203 |
The suboccipital triangle is a region of the neck bounded by the following three muscles:
- Rectus capitis posterior major - above and medially
- Obliquus capitis superior - above and laterally
- Obliquus capitis inferior - below and laterally
It is covered by a layer of dense fibro-fatty tissue, situated beneath the Semispinalis capitis.
The floor is formed by the posterior occipito-atlantal membrane, and the posterior arch of the atlas.
In the deep groove on the upper surface of the posterior arch of the atlas are the vertebral artery and the first cervical or suboccipital nerve.
[edit] See also
[edit] External links
- SUNY Labs 01:11-0101 - "Muscles of the Back - Suboccipital Triangle"
- Description at myqth.com
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This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
