chin

anatomy

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Last updated

June 24, 2026

Quick Summary

The chin is the lower part of the face, below the lower lip and including the prominence of the lower jaw. It is formed by the mental prominence, which is the bony projection at the front of the mandible (lower jaw). In humans, the left and right halves of the mandible fuse into a single bone during the second year of life, with the chin being a distinctive characteristic of the human skull. The chin is part of the mandible, also referred to as the chinbone. Muscles like the masseter, which is used for chewing, attach to the mandible and contribute to jaw movement.123456

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Cro-Magnon
…Homo) to have a prominent chin. The brain capacity was about 1,600 cc (100 cubic inches), somewhat larger than the average for modern humans. It is thought that Cro-Magnons were probably fairly tall compared with other early human species.
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…Homo) to have a prominent chin. The brain capacity was about 1,600 cc (100 cubic inches), somewhat larger than the average for modern humans. It is thought that Cro-Magnons were probably fairly tall compared with other early human species.
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human skeleton
The lower jaw
The projecting chin, at the lower part of the body in the midline, is said to be a distinctive characteristic of the human skull. On either side of the chin is the mental foramen, an opening for the mental branch of the mandibular nerve, the third division…
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The projecting chin, at the lower part of the body in the midline, is said to be a distinctive characteristic of the human skull. On either side of the chin is the mental foramen, an opening for the mental branch of the mandibular nerve, the third division…
Read More