Nuchal lines
The nuchal lines are four curved lines on the external surface of the occipital bone:
- The upper, often faintly marked, is named the highest nuchal line, but is sometimes referred to as the Mempin line, and it attaches to the epicranial aponeurosis.
- Below the highest nuchal line is the superior nuchal line. To it is attached, the splenius capitis muscle, the trapezius muscle and the occipitalis.
- From the external occipital protuberance a ridge or crest, the external occipital crest also called the median nuchal line, often faintly marked, descends to the foramen magnum, and affords attachment to the nuchal ligament.
- Running from the middle of this line is the inferior nuchal line. Attached are the obliquus capitis superior muscle, rectus capitis posterior major muscle, and rectus capitis posterior minor muscle.
| Nuchal lines | |
|---|---|
 Occipital bone. Outer surface. | |
 Side view of head, showing surface relations of bones. (Superior and median lines visible at bottom right.) | |
| Details | |
| Identifiers | |
| Latin | Linea nuchae |
| Anatomical terms of bone | |
Additional images
Posterior view of superior nuchal line (labeled in red) and muscles connecting to it.
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References
This article incorporates text in the public domain from page 130 of the 20th edition of Gray's Anatomy (1918)
External links
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Wikimedia Commons has media related to Nuchal lines. |
- "Anatomy diagram: 34257.000-1". Roche Lexicon - illustrated navigator. Elsevier. Archived from the original on 2012-07-22.
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