5 Questions
What type of cartilage lines the articular surfaces of the temporomandibular joint (TMJ)?
Fibrocartilage
How many compartments is the joint cavity of the TMJ divided into?
Two compartments
What type of joint is the temporomandibular joint (TMJ) considered as a whole?
Ginglymoarthrodial joint
What forms most of the articular surface of the mandibular fossa in the temporomandibular joint (TMJ)?
Articular eminence
At what angle is the transverse ridge of dense bone in the glenoid fossa tilted down to the occlusal plane?
$25^ ext{o}$
Study Notes
Temporomandibular Joint (TMJ)
- The articular surfaces of the TMJ are lined with fibrocartilage.
Joint Cavity
- The joint cavity of the TMJ is divided into two compartments.
Type of Joint
- The temporomandibular joint (TMJ) is considered a ginglymo-arthrodial joint as a whole.
Articular Surface
- The articular surface of the mandibular fossa in the TMJ is formed mainly by the squamous part of the temporal bone.
Glenoid Fossa
- The transverse ridge of dense bone in the glenoid fossa is tilted down to the occlusal plane at an angle of approximately 30 degrees.
Test your knowledge about the anatomy and function of the temporomandibular joint (TMJ), which is a synovial joint in the head and neck region. Learn about the unique features of TMJ and its role in jaw movement and function.
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