Muscles of Facial Expression Actions

Question 1

Buccinator

Answer 1

Compresses cheeks

Question 2

Depressor labii inferioris

Answer 2

depresses lower lip

Question 3

Levator labii superioris

Answer 3

elevates upper lip

Question 4

Levator anguli oris

Answer 4

elevates corner of mouth

Question 5

mentalis

Answer 5

elevates and protrudes lower lip

Question 6

orbicularis oris

Answer 6

compresses, purses lips

Question 7

risorius

Answer 7

draws corner of mouth to the side

Question 8

depressor anguli oris

Answer 8

depresses corner of mouth

Question 9

zygomaticus major

Answer 9

retracts and elevates corner of mouth

Question 10

zygomaticus minor

Answer 10

retracts and elevates upper lip

Question 11

corrugator supercilii

Answer 11

pulls skin inferiorly and anteriorly, wrinkles brow

Question 12

levator palpebrae superioris

Answer 12

elevates upper eyelid

Question 13

orbicularis oculi

Answer 13

closes eye

Question 14

procerus

Answer 14

moves nose, changes position and shape of nostrils

Question 15

nasalis

Answer 15

compresses bridge, depresses tip of nose; elevates corners of nostrils

Question 16

teporoparietalis

Answer 16

tenses scalp, moves auricle of ear

Question 17

frontal belly of occipitofrontalis

Answer 17

raises eyebrow, wrinkles forehead

Question 18

occipital belly of accipitofrontalis

Answer 18

tenses and retracts scalp

Question 19

platysma

Answer 19

tenses skin of neck, depresses mandible

Question 20

what is the origin of the buccinator?

Answer 20

1. alveolar processes of maxilla and mandible

2. pteryomandibular raphe

Question 21

what is the insertion of the buccinator?

Answer 21

blends into fibers of orbicularis oris

Question 22

where are the connections of the pterygomandibular raphe?

Answer 22

upper: pterygoid hamulus
lower: mandible; immediately posterior to third molar