7.7 Musculature of the Head

Question 1

Which muscles of mastication are important for mandible elevation?

Answer 1

• Temporalis
• Medial pterygoid
• Masseter

Question 2

Which muscles of mastication area responsible for protruding the jaw?

Answer 2

Pterygoids, especially lateral

Question 3

Which muscles of mastication are important for retraction of the mandible?

Answer 3

Posterior temporalis, deep masseter

Question 4

Which nerve provides motor and sensory innervation to the muscles of mastication?

Answer 4

CN V3

Question 5

To which part of the mandible does the temporalis muscle attach?

Answer 5

Coronoid process.

Question 6

To which part of the mandible does the masseter attach?

Answer 6

Angle of mandible.

Question 7

Which is the only muscle of mastication that can open the jaw? Can it also close the jaw?

Answer 7

• Lateral pterygoid
• No; it cannot also close

Question 8

What are the two heads of the lateral pterygoid? Which is larger?

Answer 8

Upper and lower head. Lower is larger

Question 9

What are the two heads of the medial pterygoid?

Answer 9

Superficial and deep.

Question 10

Which muscles of mastication are important for side to side movement of jaw?

Answer 10

Pterygoids.