How many chin do we have?
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Perhaps the most common explanation is that our chin helps buttress the jaw against certain mechanical stresses. ... They suggested the chin may have evolved to maintain the jaw's resistance to loads as our ancestors' teeth, jaws and chewing muscles got smaller early on in our species' history..
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only 1...The human chin (also known as the mental protuberance, mental eminence, and, rarely, mental osseum, tuber symphyseos) refers to the forward pointed part of the anterior mandible (mental region) below the lower lip. A fully developed human skull has a chin of between 0.7 cm and 1.1 cm. While some more obese people may appear to have a “double chin”
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