Muscles Closing The Mouth/Chewing

Question 1

Temporalis (origin)

Answer 1

Lateral skull/temporal fossa

Question 2

Temporalis (insertion)

Answer 2

Coronoid, medial surface of ramus

Question 3

Temporalis (action)

Answer 3

Elevate mandible

Question 4

Temporalis (nerve)

Answer 4

Mandibular branch of CN V (trigeminal nerve)

Question 5

Masseter (origin)

Answer 5

Zygomatic bone and arch

Question 6

Masseter (insertion)

Answer 6

Lateral surface ramus and angle of mandible

Question 7

Masseter (action)

Answer 7

Elevate mandible

Question 8

Masseter (nerve)

Answer 8

Mandible branch of CN V (trigeminal nerve)

Question 9

Medial pterygoid (origin)

Answer 9

Med surface of lat pterygoid plate

Question 10

Medial pterygoid (action)

Answer 10

Elevates mandible

Question 11

Medial pterygoid (insertion)

Answer 11

Medial surface of ramus and angle

Question 12

Medial pterygoid (nerve)

Answer 12

Mandibular branch of CN V (trigeminal nerve)

Question 13

Lateral pterygoid Superior head (origin)

Answer 13

Greater wing of sphenoid

Question 14

Lateral pterygoid Superior head (insertion)

Answer 14

TMJ capsule and disc

Question 15

Lateral pterygoid superior head (action)

Answer 15

Retrusion (stabilizes disc)

Question 16

Lateral pterygoid BOTH HEADS (nerve)

Answer 16

Mandibular branch of CN (trigeminal nerve)

Question 17

Lateral pterygoid inferior head (origin)

Answer 17

Lat surface of lat pterygoid plate

Question 18

Lateral pterygoid inferior head (insertion)

Answer 18

Mandible neck, just inferior to condyle

Question 19

Lateral pterygoid inferior head (action)

Answer 19

Protrusion