Muscles Of Mastication

Question 1

Nerve of muscles of mastication

Answer 1

Trigeminal nerve

Question 2

Action of temporalis

Answer 2

Elevates; retracts mandible

Question 3

Origin of masseter

Answer 3

Originates on lower border and medial surface of zygomatic arch

Question 4

insertion of masseter

Answer 4

Lateral surface of coronoid process, Ramus and angle of mandible

Question 5

Action of Masseter

Answer 5

Elevates superficial mandible; retracts deep part of mandible

Question 6

Origin of lateral ptertgoid

Answer 6

Superior head from infratemporal surface of sphenoid; inferior head from lateral surface of lateral ptertgoid plate of sphenoid

Question 7

Insertion of lateral pterygoid

Answer 7

Neck of mandible; articulate dick and capsule of temporomandibular joint

Question 8

Action of lateral pterygoid

Answer 8

Depresses (superior head); protracts (inferior head)

Question 9

Medial pterygoid origin

Answer 9

Tuber of maxilla; medial surface of lateral pterygoid plate; pyramidal process of palatine bone (deep head)

Question 10

Insertion of medial pterygoid

Answer 10

Medial surface of angle and Ramus of mandible

Question 11

Action of medial pterygoid

Answer 11

Elevates; protracts mandible

Question 12

Temporalis origin and insertion

Answer 12

Originates in temporal fossa and inserts to coronoid process and Ramus of mandible