TMJ Flashcards
what is glenoid fossa is aka
mandibular fossa
define synovial joint
type of joint surrounded by fluid called synovial fluids
define Hilton’s Law
Innervation of a joint also innervates the muscle that moves the joint and the overlying skin
define congenital
present from birth
define ipsilateral
occurring to side of body
define bruxism
involuntary habitual grinding of teeth (commonly when asleep)
define dystonia
muscular spasm linked with neurological disease or side effect of drug therapy
define Articular tubercle
rounded eminence on anterior aspect of squamous temporal bone.
define petrotympanic fissure and what is it aka
located in temporal bone specifically TMJ to tympanic cavity squamotympanic or glaserian fissure
define tympanic cavity
small cavity surrounding bones of middle ear
6 main components of TMJ
Condyles, Temporal bone (glenoid fossa), disc, capsule, ligaments, muscle
the synovial joint is lined with f…….. which is vascular/avascular.
fibrocartilage
avascular
what does the articular disc divide? (2)
upper and lower compartments
What is the TMJ innervated by? And what law does it follow?
Trigeminal Nerve (V) Hilton's law
What does the articular disc allow? (2 movements)
Hinge movements (rotation) and gliding movements (translation)
