What is the jaw muscle called?

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The jaw muscle is called the masseter. Gray's Anatomy (1918) describes it as a thick, short muscle on the side of the face.

Summary

The jaw muscle is called the masseter. Gray's Anatomy (1918) describes it as a thick, short muscle on the side of the face.

What it is

  • A thick, short muscle on the side of the face.
  • One of the strongest muscles in the body by cross-sectional area.
  • Raises the mandible to close the jaws (chewing).

Where it is

  • Between the zygomatic arch above and the angle of the mandible below.
  • Can be felt tightening when the teeth are clenched.
  • Covers most of the ramus of the mandible.

Sources

According to Gray's Anatomy of the Human Body (1918, public domain):

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