The TMJ (temporomandibular joint)is composed of the upper condyle of the mandible, which fits into the temporal bone. These two surfaces exist in a capsule and are surrounded by a thin membrane that secretes a lubricating fluid. This means that the TMJ is a fibrous joint.

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Quizplus · Accepted Answer

The TMJ is a synovial joint, characterized by the presence of a joint capsule and synovial fluid that lubricates the joint, not a fibrous joint which typically has no joint cavity and is held together by dense irregular connective tissue.

The TMJ (Temporomandibular Joint)is Composed of the Upper Condyle of the Mandible