tmj

Question 1

apex

Answer 1

crest of eminence

Question 2

slope

Answer 2

articular eminence

Question 3

articular eminence

Answer 3

• LOAD bearing
• outer fibrous layer
• inner fibrocartilage

Question 4

postglenoid process

Answer 4

• NOT load bearing
• outer and inner fibrous layer that resembles periosteum
• continues with retrodiscal pad

Question 5

load bearing areas vs non load bearing

Answer 5

load bearing has thick fibrous layers

Question 6

articular disc

Answer 6

• biconcave
• superior: gliding (translational movement)
• inferior: hinge (rotation *1st movement)
• dense regular ct with thick collagen fiber bundles
• avascular and no nerves

Question 7

bilamina zone

Answer 7

retrodiscal pad

Question 8

retrodiscal pad

Answer 8

-highly vascularized and innervated

Question 9

superior lamina of retrodiscal pad

Answer 9

from pars posterior of disc to squamotympanic fissue

-ct: collagen, elastic, nerves and vessels

Question 10

inferior lamina of retrodiscal pad

Answer 10

• from pars posterior of disc to condyle

- collagen (NO elastic)

Question 11

genu vasculosum

Answer 11

• space between superior and inferior lamina

- contains arteriovenous shunt

Question 12

condyle

Answer 12

• synovial joint
• NOT made of hyaline cartilage
• NO diaphysis or epiphysis

Question 13

outer layer of condyle

Answer 13

-fibrous

Question 14

inner layer of condyle

Answer 14

• fibrocartilage

- 3 zones: proliferative, hypertrophic, calcification

Question 15

head of the condyle is made by

Answer 15

from secondary cartilage by endochondral ossification

Question 16

thick pars anterior

Answer 16

attached to superior head of lat pterygoid m

Question 17

thin pars intermedia

Answer 17

load bearing area

-NO nerves or vessels

Question 18

thick pars posterior

Answer 18

attached to retrodiscal pad

Question 19

what indicates multidirectional growth capacity of condyle

Answer 19

unordered cartilagenous cell columns

Question 20

fibrocartilage is _____ (more or less) mineralized than subarticular bone

Answer 20

more

Question 21

layers of synovial fluid

Answer 21

superficial cellular intimal layer

inner vascular subintimal layer

Question 22

type a cells of intimal layer

Answer 22

macrophage-like

Question 23

type b cells of intimal layer

Answer 23

fibroblast-like

many rer, make synovial fluid

Question 24

composition of synovial fluid

Answer 24

hyaluronic acid, lubricin, monocytes

Question 25

synovial membrane only covers

Answer 25

non load bearing areas of articular disc

Question 26

articular disc has

Answer 26

organized thick collagen fibers and sparse fibroblasts