External occipital protuberance
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| External occipital protuberance | |
|---|---|
| Lua error in package.lua at line 80: module 'Module:InfoboxImage/data' not found. Human skull lateral view. External occipital protuberance shown in red. | |
| Lua error in package.lua at line 80: module 'Module:InfoboxImage/data' not found. Occipital bone seen from below. Outer surface. (External occipital protuberance visible at top center.) | |
| Details | |
| Identifiers | |
| Latin | protuberantia occipitalis externa |
| Anatomical terminology | |
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Near the middle of the squamous part of occipital bone is the external occipital protuberance, the highest point of which is referred to as the inion. The inion is the most prominent projection of the protuberance which is located at the posteroinferior (rear lower) part of the human skull. The nuchal ligament and trapezius muscle attach to it.
The inion (ἰνίον, iníon, Greek for the occipital bone) is used as a landmark in the 10-20 system in electroencephalography (EEG) recording. Extending laterally from it on either side is the superior nuchal line, and above it is the faintly marked highest nuchal line.
A study of 16th-century Anatolian remains showed that the external occipital protuberance statistically tends to be less pronounced in female remains.[1]
Additional images
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See also
References
This article incorporates text in the public domain from Template:Wikidatathe 20th edition of Gray's Anatomy (1918)
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- ^ Page Module:Citation/CS1/styles.css has no content.Gülekon, IN (2003). "The external occipital protuberance: can it be used as a criterion in the determination of sex?". J Forensic Sci. 48 (3): 513–6. doi:10.1520/JFS2002183. PMID 12762519.
External links
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- Page Module:Citation/CS1/styles.css has no content."Anatomy diagram: 34257.000-1". Roche Lexicon - illustrated navigator. Elsevier. Archived from the original on 2012-07-22.
- Bones of the Skull (Lateral View) Upstate Medical University
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