External occipital protuberance

External occipital protuberance
Human skull lateral view. External occipital protuberance shown in red.
Occipital bone seen from below. Outer surface. (External occipital protuberance visible at top center.)
Details
Latin	protuberantia occipitalis externa
Identifiers
Dorlands /Elsevier	p_38/12673891
TA
TH	{{#property:P1694}}
TE	{{#property:P1693}}
FMA	{{#property:P1402}}
Anatomical terminology [[[d:|edit on Wikidata]]]

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. 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.

Additional images

Position of external occipital protuberance (shown in red). Animation.  Occipital bone. Position of external occipital protuberance shown in red.  Human skull seen from below. Position of external occipital protuberance shown in red.  Human skull seen from below. External occipital protuberance labelled at the bottom.  Occipital bone replica of Homo erectus (400,000 years old) seen from behind.

See also

• Inion
• Internal occipital protuberance

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

External links

• Anatomy diagram: 34257.000-1 at Roche Lexicon - illustrated navigator, Elsevier
• http://www.upstate.edu/cdb/grossanat/hnsklatob1.shtml