TMJ

Question 1

TMJ ligament

Answer 1

OI: neck of mandible to zygoma
A: prevent post/inf displacement
strongest ligament

Question 2

Sphenomandibular ligament

Answer 2

from Meckel’s cartilage

sphenoid spine to lingua of mandible

Question 3

Stylomandibular ligmant

Answer 3

from styloid process to mandibular angle

Question 4

movement of the upper compartment

Answer 4

translation

Question 5

movement of the lower compartment

Answer 5

rotation

Question 6

vascular region

Answer 6

bilaminar zone

Question 7

innervation

Answer 7

auriculotemporal
n to masseter
post. deep temporal n

Question 8

What n supplies pain sensation from the capsule and disc?

Answer 8

auriculotemporal

Question 9

What type of joint is the TMJ?

Answer 9

synovial joint

diarthrosis

Question 10

What type of cartilage is in the TMJ?

Answer 10

dense fibrous CT (fibrocartilage)

Question 11

What a supply the TMJ?

Answer 11

sup temporal
deep auricular
ant tympanic
ascending pharyngeal

Question 12

What does the intrinsic TMJ ligamanet do?

Answer 12

prevent post/inf displacement

Question 13

What 2 extrinsic ligaments stabilize the TMJ?

Answer 13

sphenomandibular

stylomandibular

Question 14

Describe the articulating disc

Answer 14

biconcave
avascular
divides upper/lower compartment

Question 15

what is located in the upper compartment?

Answer 15

articular eminence

mandibular fossa and disc

Question 16

what is located in the lower compartment?

Answer 16

condyle and disc

Question 17

what zone of the articulating disc are thin/thick?

Answer 17

thin: intermediate
thick: post > ant

Question 18

What forces would be applied to reduce a luxated TMJ?

Answer 18

inf/post

Question 19

TMJ disc displacement most commonly occurs

Answer 19

anteriomedially

Question 20

S/S of ant disc displacement

Answer 20

clicking upon opening/closing

Question 21

what the the region of the TMJ disc that has the most dense organized elastic fibers?

Answer 21

post-supeior lamina of bilaminar zone