Muscles of Masstication

Question 1

Masseter Origin

Answer 1

Origin- Zygomatic arch and maxillary process of zygomatic bone

Question 2

Masseter Insertion

Answer 2

Lateral surface of ramus of mandible

Question 3

Masseter Innervation

Answer 3

CN V Trigeminal V3

Question 4

Masseter Function

Answer 4

Elevate mandible and same side deviation

One of strongest muscles in world

Question 5

Temporalis Origin

Answer 5

Bone of temporal fossa and temporal fascia

Question 6

Temporalis Insertion

Answer 6

Coronoid process of mandible

Ramus of mandible

Question 7

Temporalis Innervation

Answer 7

CN V trigeminal V3

Question 8

Temporalis Function

Answer 8

Elevate and retract mandible

Question 9

Medial pterygoid Origin

Answer 9

Deep- Lateral plate pterygoid process

Superficial- maxilla

Question 10

Medial Pterygoid Insertion

Answer 10

Medial surface of mandible near angle

Question 11

Innervation of all muscles of mastication

Answer 11

CN V, Trigeminal V3

Question 12

Function of Medial pterygoid

Answer 12

Elevation and side to side movements of mandible

Question 13

Origin of lateral pterygoid

Answer 13

Upper head- root of infratemporal fossa

Lower head- Lateral plate of pterygoid process

Question 14

Insertion of lateral pterygoid

Answer 14

Capsule of TMJ in region attachment to articular disk and pterygoid fovea on neck of mandible

Question 15

Function of lateral pterygoid

Answer 15

Protrusion and side to side movement of mandible

Depression of mandible

Question 16

Hyoids

Answer 16

Helps to open TMJ

Question 17

3 parts of Trigeminal nerve

Answer 17

V1- eye
V2- maxillary part
V3- mandible

Question 18

vascular supply of TMJ

Answer 18

superficial termporal artery
maxillary artery
(both from external carotid)

Question 19

Chewing

Answer 19

Mouth opens, mouth closes
Tongue and cheeks help move apple left or right
In a figure 8 motion

Question 20

Elevation of mandible is done by

Answer 20

temporalis, masseter, and medial pterygoid

Question 21

Depression of mandible done by

Answer 21

gravity, hyoids and lateral pterygoid (maybe?)

Question 22

Protrusion of mandible done by

Answer 22

lateral pterygoid muscle, with some assistance by the medial pterygoid;

Question 23

Retraction of mandible

Answer 23

temporalis and masseter muscles

Question 24

Side to side movement of mandible done by

Answer 24

medial and lateral pterygoid muscles