Science & Technology
January 14, 2012 ·
32 comments
Image Credit: sxc.hu
Source: Smithsonian Magazine | Comments (32)
Why do humans have chins ?
By T.K. RandallJanuary 14, 2012 ·
32 comments
Image Credit: sxc.hu
It's a standard part of our bodies that we don't give much thought to, but just why do we have a chin ?
It isn't clear exactly what purpose the chin serves in humans. One of the more prominent theories suggests that the chin is intended as a way to protect against certain types of mechanical stress, in particular during eating. Studies have demonstrated that the chin does help to support the jaw during chewing. Other scientists have suggested that the chin has to do with sexual selection, with females preferring males with broader chins as a sign of good genes.When you think about what makes modern humans unique, the chin is probably not the first, second or even third thing that comes to mind. Yet this bony protrusion at the end of the lower jaw is not seen in any other hominid species. So what’s a chin good for?
Source: Smithsonian Magazine | Comments (32)
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