jawTMJ stands for Temporomandibular Joint, and it is a small connecting point where your jaw meets your skull. Despite its small size, its vertical and horizontal movement allows you talk, chew, and yawn.  The TMJ is an a important location because nerves from the brain pass, and muscles near the TMJ are related to the upper cervical region. When the TMJ is suffering from subluxation, it causes pain and discomfort that prohibits normal activities such as eating, talking, chewing, etc.