The brow ridge or supraorbital ridge is the bony protrusion of the upper eye socket. Its function is to protect the eyes and acts as a reinforcement for the eye socket itself against fracture.
The term supraorbital rim is ambiguous as it may refer to either the outer protrusion of the supraorbital ridge, or the supraorbital margin.
Males, compared to females, generally have more protrusive supraorbital rims. It's a feature of facial masculinity.
The browridge is widely viewed as a Chad characteristic in the incelosphere.
Origin and sex differences[edit | edit source]
Among primates and apes, including humans, the brow ridge has been argued to have evolved due to mastication since the muscle which involved in mastication creates a pressure on the brow ridge bone. Men have more pronounced and square brow ridges, closer to that of great apes, while women's eyebrows are roundish and less protruding, closer to the anatomy of babies (see neoteny).
Example of browridge morph[edit | edit source]
See also[edit | edit source]
References[edit | edit source]
- Boaz, N. T., & Ciochon, R. L. (2004). Headstrong hominids. Natural history, 113(1), 28-34.
- Carrier, D. R., & Morgan, M. H. (2014). Protective buttressing of the hominin face. Biological Reviews.
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