Mastication Oral Anatomy Muscles Insertion and Action

Question 1

What are the muscles of mastication?

Answer 1

Masseter, medial pterygoid, temporalis, lateral pterygoid

Question 2

Muscles of mastication are controlled by what nerve?

Answer 2

V3

Question 3

What is the action of the Masseter?

Answer 3

Elevation of the mandible

Question 4

What muscles control the elevation of mandible?

Answer 4

Masseter, temporalis, and medial pterygoid

Question 5

What is the action of the temporalis?

Answer 5

Elevation of the mandible

Question 6

What is the action of the medial pterygoid?

Answer 6

Elevation of the mandible

Question 7

What is the action of the lateral pterygoid?

Answer 7

1. slight depression of the mandible
2. protrusion of the mandible
3. “shifting” of the mandible

Question 8

What is the nerve that controls the Masseter?

Answer 8

V3

Question 9

What is the nerve that controls the temporalis?

Answer 9

V3

Question 10

What is the nerve that controls the medial pterygoid?

Answer 10

V3

Question 11

What is the nerve that controls the lateral pterygoid?

Answer 11

V3

Question 12

What muscle has a different action than the other 3?

Answer 12

Lateral pterygoid muscle

Question 13

What muscle has 3 actions?

Answer 13

Lateral pterygoid muscle

Question 14

What is the muscle for these actions?

1. slight depression of the mandible
2. protrusion of the mandible
3. “shifting” of the mandible

Answer 14

Lateral pterygoid muscle