Illustration copyright 2000 by Nucleus
Communications, Inc. All rights reserved.
The temporomandibular (TM) joints join the skull and lower jawbone
(mandible). These gliding "ball and socket" joints are located just in front of
each ear, and they move when a person opens and closes his or her mouth.
The TM joints are stabilized by muscles that attach directly to the
jawbone. They are separated by a disc made of cartilage, which keeps the two
bones from rubbing together.
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