tmj Flashcards
1
Q
apex
A
crest of eminence
2
Q
slope
A
articular eminence
3
Q
articular eminence
A
- LOAD bearing
- outer fibrous layer
- inner fibrocartilage
4
Q
postglenoid process
A
- NOT load bearing
- outer and inner fibrous layer that resembles periosteum
- continues with retrodiscal pad
5
Q
load bearing areas vs non load bearing
A
load bearing has thick fibrous layers
6
Q
articular disc
A
- biconcave
- superior: gliding (translational movement)
- inferior: hinge (rotation *1st movement)
- dense regular ct with thick collagen fiber bundles
- avascular and no nerves
7
Q
bilamina zone
A
retrodiscal pad
8
Q
retrodiscal pad
A
-highly vascularized and innervated
9
Q
superior lamina of retrodiscal pad
A
from pars posterior of disc to squamotympanic fissue
-ct: collagen, elastic, nerves and vessels
10
Q
inferior lamina of retrodiscal pad
A
- from pars posterior of disc to condyle
- collagen (NO elastic)
11
Q
genu vasculosum
A
- space between superior and inferior lamina
- contains arteriovenous shunt
12
Q
condyle
A
- synovial joint
- NOT made of hyaline cartilage
- NO diaphysis or epiphysis
13
Q
outer layer of condyle
A
-fibrous
14
Q
inner layer of condyle
A
- fibrocartilage
- 3 zones: proliferative, hypertrophic, calcification
15
Q
head of the condyle is made by
A
from secondary cartilage by endochondral ossification
