infratemporal fossa

Question 1

superior boundary of IT fossa

Answer 1

inferior surface of the greater wing of the sphenoid bone

Question 2

medial boundary of IT fossa

Answer 2

lateral pterygiod plate

Question 3

anterior boundary of IT fossa

Answer 3

posterior aspect of maxilla

Question 4

posterior boundary of IT fossa

Answer 4

tympanic plate and the mastoid and styloid processes of the temporal bone

Question 5

the bony articular surfaces involved in TMJ are the ___ and ___ superiorly and the ____ inferiorly

Answer 5

mandibular fossa
articular tubercle of the temporal bone
head of the mandible

Question 6

TMJ is completely divided by a fibrous ____ into two parts

Answer 6

articular disc

Question 7

lower part of TMJ allows the hinge-like ___ and ___ of the mandible

Answer 7

depression
elevation

Question 8

upper part of TMJ allows the head of the mandible to translocate ___ and ___

Answer 8

forward (protrusion)
backwards (retraction)

Question 9

opening the mouth involves both ___ and ___

Answer 9

depression
protrusion

Question 10

___ movement allows greater depression of the mandible by preventing ____ movement of the angle of the mandible into structures in the neck

Answer 10

protrusion
backward

Question 11

TMJ is innervated by ____

Answer 11

CN V3 (mandibular)

Question 12

thickening of TMJ capsule that strengthens the joint laterally

Answer 12

lateral ligament

Question 13

the lateral ligament of TMJ helps to prevent ____ dislocation

Answer 13

posterior

Question 14

extrinsic ligaments such as the ____ connect the mandible to the skull for passive support

Answer 14

sphenomandibular ligament

Question 15

sphenomandibular ligament originates from the ____ to the ____

Answer 15

spine of sphenoid
lingula of mandible

Question 16

TMJ movements are produced by ____

Answer 16

muscles of mastication