Lec 6 - Histo TMJ

Question 1

upper and lower synovial compartments are divided by this

Answer 1

arituclar disc

Question 2

synovial fluid does these but doesnt do this

Answer 2

lubricates/nourishes chondrocytes, does not act as a shock absorber because not enough of it

Question 3

egg white consistency of synovial fluid is due to blank

Answer 3

hyaluronic acid

Question 4

tmj is not covered by blank

Answer 4

hyaline cartilage

Question 5

roof of mandibular fossa is formed by blank from the temporal bone with no underlying blank

Answer 5

compact bone, spongy bone

Question 6

mandibular fossa is lined by thin blank but not blank

Answer 6

dense fibrous ct, fibrocartilage

Question 7

mandibular fossa is non blank

Answer 7

stress bearing

Question 8

bone comprising the articular eminence is blank compared to fossa

Answer 8

thicker (withstands more pressure)

Question 9

thickest part of articular disc

Answer 9

posterior band

Question 10

the postero superior and postero inferior laminae of the posterior band surround a part called the blank

Answer 10

retrodiscal pad

Question 11

retrodiscal pad is made of blank ct

Answer 11

loose

Question 12

the posterosuperior lamina is composed of blank fibers

Answer 12

elastic

Question 13

the posteroinferior lamina is composed of blank

Answer 13

collagenous tissue

Question 14

fibers of both posterosuperior and posteroinferior course in this direction

Answer 14

anteroposterior

Question 15

three layers of superior aspect of the condyle

Answer 15

fibrous articular layer, cellular proliferative layer, hyaline growth cartilage

Question 16

fibrous articular layer sometimes has blank deep layers

Answer 16

calcified

Question 17

fibrous articular layer is not in direct contact with underlying bone but is separated by remnants of blank cartilage from the condyl

Answer 17

grwoth

Question 18

layer with mesenchymal cells for chondroblastic cells

Answer 18

cellular proliferative layer

Question 19

layer that is the innermost layer

Answer 19

hyaline cartilage

Question 20

outer zone of hyaline cartilage is for blank

Answer 20

matrix formation

Question 21

middle zone of hyaline cartilage is for blank

Answer 21

cellular hypertrophy

Question 22

inner zone of hyaline cartilage is for blank

Answer 22

calcification and resorption

Question 23

primary cartilages grow blank while condylar cartilage grows by blank of cells produced in the intermediate layer

Answer 23

interstitially, apposition

Question 24

the chondrocytes in primary cartilage blank but condylar cartilage chondrocytes blank

Answer 24

die, live

Question 25

part of condyle that is very vascular

Answer 25

posterosuperior

Question 26

marrow of the condyle is blank type with trabeculae joining the compact bony surface layer at blank angles

Answer 26

hemopoietic, right

Question 27

two layers of articular capsule

Answer 27

stratum fibrosum (outer), stratum synovium

Question 28

inner layer of synovial membrane is blank

Answer 28

rich in cells and vessels

Question 29

outer layer of synovial membrane is blank

Answer 29

poorly vascularized

Question 30

most cells of synovial fluid is blank

Answer 30

monocytes (58%) then macrophages (38%)

Question 31

macrophages and monocytes function

Answer 31

remove free fragments from wear and tear and can take several months

Question 32

amount of synovial fluid in superior

Answer 32

1.2 mL

Question 33

amount of synovial fluid in inferior

Answer 33

.9 mL

Question 34

most abundant receptor types of tmj

Answer 34

free nerve endings

Question 35

these are static mechanoreceptors of the tmj

Answer 35

ruffini, gto

Question 36

free nerve endings are blank receptors

Answer 36

pain

Question 37

pacinian corpuscles convey information during blank

Answer 37

joint movement

Question 38

all receptors in tmj are involved in blank protecting the joint from damage

Answer 38

reflexes