Mastication Muscles

Question 1

What is the origin of temporalis?

Answer 1

Temporal bone

Question 2

What is the origin of medial pterygoid?

Answer 2

Lateral pterygoid plate medial side

Question 3

What are the origins of lateral pterygoid?

Answer 3

Lateral pterygoid plate lateral side and greater wing of sphenoid

Question 4

What is the common insertion for masseter, temporalis, medial pterygoid, and lateral pterygoid?

Answer 4

Mandible

Question 5

Specifically, where does the masseter insert?

Answer 5

Lateral side of ramus of mandible

Question 6

Specifically, where does temporalis insert?

Answer 6

Coronoid process of mandible

Question 7

Specifically, where does medial pterygoid insert?

Answer 7

Medial side of ramus of mandible

Question 8

Specifically, where does lateral pterygoid insert?

Answer 8

Neck of mandible and articular disc of TMJ

Question 9

What is the action of both masseter and medial pterygoid?

Answer 9

Elevate mandible

Question 10

What are the actions of temporalis?

Answer 10

Elevate and retrude mandible

Question 11

What are the actions of lateral pterygoid?

Answer 11

Depress and protrude mandible

Question 12

What is the innervation for masseter, temporalis, medial pterygoid, and lateral pterygoid?

Answer 12

V3

Question 13

What is the origin of masseter?

Answer 13

Zygomatic arch