What is the only joint in the head?
The temporomandibular joint
What is the blood supply for the TMJ?
The EXTERNAL carotid artery
Which cranial nerve is associated with the TMJ?
V - trigeminal nerve, mandibular division
What does crepitus mean?
continuous noise during movement of joint
What completely encloses the TMJ?
The joint capsule
What is the articular eminence?
a smooth round ridge positioned anterior to othe articular fossa
What does the condyle articulate against?
the artcular eminence
What is the depression of the temporal bone located posterior to the articular eminence called?
Disc of the TMJ is called?
Meniscus of joint
What is the disc or meniscus attached to?
The condyle of the mandible
What does synovial fluid do?
allows nourishment and lubrication
acts as a cushion for the joints
Temporomandibular joint ligament is located where?
located on the
side of each joint
connects the condyle to the temporal bone
Where is the sphenomandibular ligament located?
side of the mandible
Where is the Stylomandibular ligament located?
runs from the styloid process of the temporal bone to the angle of the mandible
Which are the 3 TMJ ligaments?
1. temporomandibular joint ligament
2. sphenomandibular ligament
3. stylomandibular ligament
Which are the 2 TMJ movements?
Hinge or swinging
Where does the hinge movement occur?
lower joint cavity between disc and condyle as the mouth opens; raising and lowering jaw
Gliding occurs where?
UPPER joint cavity between disc and temporal bone; protrusion and retraction
What is TMJ?
The articulation between the temporal bone and mandible
a locked TMJ
find fossa, eminence, meniscus, capsule
basic anatomy of the TMJ