Lec 5 - TMJ Gross Flashcards
superior joint of tmj is blank
gliding
inferior joint of tmj is blank
hinge
this many bones make up a compound joint
3
three “bones” that make up tmj
condyle of mandible, articular disc, articular fossa of temporal bone
if we didnt have the gliding joint on top of the hinge joint at the tmj, this would be crushed
parotid
hinge joint is aka
ginglymoid
gliding joint is blank
arthrodial
combination of the two types of joints at the tmj is called blank
ginglymoarthrodial
the muscle that attaches to condylar process and disk
lateral pterygoid
jaw joint in mammals is formed by blank but in any other jawed animal it is formed by blank
membranous ossification, endochondral ossification
tmj forms between these weeks
7-11
tmj is totally formed by blank
12th week
tmj malformations during pregnancy caused by teratogens can occur during the blank trimester
first
lower head of lateral pterygoid attaches here
condylar process
upper head of lateral pterygoid attaches here
and forms part of the articular disc
mesencymal precursor to temporal bone
glenoid blastema
mesenchymal precursor to mandible
condylar blastema
meckel’s cartilage plays a blank role in forming tmj
indirect
meckel’s cartilage turns into these
sphenomandibular ligament, anterior ligament of malleus, malleus
developing condyle of the mandible is called blank because it originates within local mesenchymal condylar blastema
secondary cartilage
fully ossified mandible is done at about this age
17
pole that is slightly prominent beyond the outer surface of the ramus
lateral
pole that juts considerably beyond the surface of the ramus
medial
because condyles form an angle between blank anterior to the foramen magnum, radiographs of tmj must be taken at blank projection
145-160, oblique
shallow cavity located on the anteromedial aspect of mandibular neck
pterygoid fovea
when mandible is in the maximal intercuspaction, the articular surface of the condyle faces the blank slope of the articular eminence and not the blank
posterior, glenoid fossa
where the chorda tympani and anterio tympanic artery and vein pass through
petrotympanic fissure
posterior slope of eminence is blank than the slope anterior to the crest of the eminence
steeper
sometimes the eminence is not developed during the first blank of life so opening mouth has condyle going blank to the crest
10 years, anterior
zone of disc without nerves, blood vessels, and takes most pressure
intermediate
this is highly innervated and give proprioceptive feedback
articular capsule
articular capsule is reinforced laterally only by the blank
temporomandibular ligament
medial capsule is reinforced by blank
nothing
part of temporomandibular ligament that limits lateral movement
oblique fibers
part of temporomandibular ligament that limits posterior movement of condyle and disk
horizontal
accessory ligament that attaches on or around the lingula and to the spine of sphenoid bone
sphenomandibular ligament
accessory ligament that attaches to the angle of the mandible and to the styloid process
stylomandibular ligament
stylomandibular ligament limits excessive blank of the mandible
protrusion
