Final answer:
The mandibular fossa of the temporal bone forms the temporomandibular joint (TMJ) by articulating with the condyle of the mandible, aided by an interposed articular disc.
Step-by-step explanation:
The mandibular fossa of the temporal bone articulates with the condyle of the mandible to form the temporomandibular joint (TMJ). This joint is fundamental in allowing mandibular depression (opening of the mouth) and elevation (closing of the mouth), as well as enabling side-to-side, and protraction/retraction movements of the lower jaw. The TMJ incorporates an articular disc which is situated between the temporal bone and the mandibular condyle, facilitating smooth motion within the joint.