Infratemporal fossa and TMJ

Question 1

Elevation of the mandible does what to the jaw?

Answer 1

closes the jaw

Question 2

depression of the mandible does what to the jaw?

Answer 2

opens the jaw

Question 3

what muscles are responsible for elevating the mandible?

Answer 3

temporalis, masseter, medial pterygoids

Question 4

what muscles are responsible for depressing the mandible?

Answer 4

lateral pterygoids, suprahyoid muscles, infrahyoid muscles

Question 5

what muscles are responsible for protrusion of the mandible?

Answer 5

lateral pterygoids, masseter, medial pterygoids

Question 6

what muscles are responsible for retrusion of the mandible?

Answer 6

temporalis and masseter muscle

Question 7

where does the sphenomandibular ligament attach to?

Answer 7

the lingula

Question 8

what are the movements of the jaw?

Answer 8

hinge and glide

Question 9

which muscles are responsible for moving the articular disc in the TMJ?

Answer 9

the upper part of the inferior lateral pterygoid and all of the superior lateral pterygoid muscle

Question 10

what movement of the jaw is performed in the first 15 degrees?

Answer 10

hinge

Question 11

what happens when gape is greater than 15 degrees?

Answer 11

the head pops out onto the articular eminence

Question 12

what is the TMJ innervated by?

Answer 12

CN V3

Question 13

what is a dislocated TMJ?

Answer 13

when the articular tubercle pops all the way into the infratemporal fossa

Question 14

what nerve do you want to hit if you want to anesthetize the lower dentition?

Answer 14

the inferior alveolar nerve

Question 15

if you want to anesthetize the upper anterior dentition, where would you make the injection?

Answer 15

in the infraorbital foramen