Which structures are involved in forming the articular surfaces of the TMJ?

The articular surfaces of the temporomandibular joint (TMJ) are primarily composed of the inferior disc, condyle, and articular eminence. The inferior disc is a fibrocartilaginous structure that acts as a cushion between the condyle of the mandible and the temporal bone of the skull. This disc allows for smooth movement during jaw function, as it helps in adapting to the varying shapes during the various stages of mouth opening and closing.

The condyle is the rounded end of the mandible that interacts with the glenoid fossa of the temporal bone. The articular eminence is a bony prominence in the temporal bone that provides a surface for the condyle to glide against during movements such as chewing or speaking. Together, these structures facilitate the essential movements of the TMJ, contributing to its function and overall biomechanics.

While the other options mention components related to the TMJ, they do not accurately describe the structures forming the articular surfaces involved in the joint's articulation and movement.