Question

Describe the functional anatomy of temporomandibular (TM) joint.

Hint:

The temporomandibular joint is unique because it combines a hinge and sliding mechanism, which gives it its wide range of motion.

Answer 1

Step 1: Definition and Function of TM Joint.
The temporomandibular joint (TMJ) connects the lower jaw (mandible) to the temporal bone of the skull. It is a hinge and sliding joint, enabling movements such as opening and closing the mouth, chewing, and speaking. It is located just in front of the ear, where the mandible meets the skull.
Step 2: Components of the TM Joint.
The TMJ consists of several key components: the articular disc, the condyle of the mandible, and the temporal bone. These work together to allow smooth motion while providing strength and flexibility to the joint.
Step 3: Functions of TM Joint.
It plays a key role in daily functions like mastication (chewing), speaking, and swallowing. The mobility and coordination of the joint allow for complex jaw movements.