Muscles Of Mastication

Question 1

masseter insertion

Answer 1

mandibular angle

Question 2

masseter innervation

Answer 2

Mandibular n

(Trigeminal Mandibular branch) CN V3

Question 3

masseter action

Answer 3

elevates (adducts) and protrudes mandible

Question 4

temporalis origin

Answer 4

temporal fossa

Question 5

temporalis insertion

Answer 5

coronoid process of the mandible

Question 6

temporalis innervation

Answer 6

(Mandibular branch of trigeminal nerve)

Question 7

temporalis action

Answer 7

Elevate (adduct) mandible - vertical fibers
Retract mandible - horizontal fibers
Lateral movement of mandible (chewing) - unilateral

Question 8

Lateral pterygoid origin superior head/inferior head

Answer 8

superior head: greater wing of sphenoid

inferior head: lateral pterygoid plate

Question 9

Lateral pterygoid insertion superior/inferior head

Answer 9

superior: articular disk of TMJ
inferior: condylar process of mandible

Question 10

Lateral pterygoid innervation

Answer 10

Mandibular branch of trigeminal n

Question 11

Lateral pterygoid action

Answer 11

Bilateral: protrudes mandible
Unilateral: Lateral movements of mandible (chewing)

Question 12

Medial pterygoid origin superficial/deep

Answer 12

superficial - tuberosity of the maxilla

deep - medial surface of lateral pterygoid process and pterygoid fossa

Question 13

Medial pterygoid insertion

Answer 13

pterygoid tuberosity of the mandibular angle

Question 14

Medial pterygoid innervation

Answer 14

Mandibular branch of trigeminal nerve

Question 15

Medial pterygoid action

Answer 15

elevates (adducts) mandible

Question 16

Masseter origin

Answer 16

zygomatic arch