Muscles of facial expression

Question 1

elevates eyebrows and wrinkles skin of forehead; protracts scalp (indicates surprise or curiosity)

Answer 1

front belly of occipitofrontalis

Question 2

front belly of occipitofrontalis innervation

Answer 2

temporal

Question 3

retracts scalp; increasing effectiveness of front belly

Answer 3

occipital belly of occipitofrontalis

Question 4

occipital belly of occipitofrontalis innervation

Answer 4

posterior auricular branch

Question 5

closes eyelids by narrowing the palpebral fissure

Answer 5

orbicularis oculi

Question 6

orbicularis oculi innervation

Answer 6

temporal and zygomatic

Question 7

draws eyebrow medially and inferiorly; creating vertical wrinkles above nose (concern or worry)

Answer 7

corrugator supercilli

Question 8

corrugator supercilli innervation

Answer 8

temporal

Question 9

depresses medial end of eyebrow; wrinkles skin over dorsum of nose (conveying disdain or dislike)

Answer 9

procerus plus transverse part of nasalis

Question 10

procerus and transverse part of nasalis innervation

Answer 10

buccal

Question 11

depresses ala laterally, dilating anterior nasal aperture (flaring nostrils), helps elevate upper lip

Answer 11

alar part of nasalis plus levator labi superioris alaeque nasi

Question 12

alar part of nasalis plus levator labi superioris alaeque nasi innervation

Answer 12

buccal

Question 13

closes oral fissure; phasic contraction compresses and protrudes lips (kissing) or resists distension (when blowing)

Answer 13

orbicularis oris

Question 14

orbicularis oris innervation

Answer 14

buccal

Question 15

part of dilators of mouth; retract (elevate) and/or evert upper lip; deepen nasolabial sulcus (showing sadness)

Answer 15

levator labii superior and zygomaticus minor

Question 16

levator labii superior innervation

Answer 16

buccal

Question 17

zygomaticus minor innervation

Answer 17

buccal

Question 18

presses cheek against molar teeth; works with tongue to keep food between occlusal surfaces and out of oral vestibule; resists distension (when blowing)

Answer 18

buccinator

Question 19

buccinator innervation

Answer 19

buccal

Question 20

part of dilators of mouth; elevate labial commissure; bilaterally to smile (happiness); unilaterally to sneer (disdain)

Answer 20

zygomaticus major

Question 21

zygomaticus major innervation

Answer 21

buccal

Question 22

part of dilators of mouth; widens oral fissure as when grinning or grimacing

Answer 22

levator anguli oris

Question 23

levator anguli oris innervation

Answer 23

buccal

Question 24

part of dilators of mouth; depresses labial commissure bilaterally to frown (sadness)

Answer 24

risorius and depressor anguli oris

Question 25

risorius innervation

Answer 25

buccal

Question 26

depressor anguli oris innervation

Answer 26

marginal mandibular

Question 27

part of dilators of mouth; retracts (depresses) and/or everts lower lip (pouting, sadness)

Answer 27

depressor labii inferioris

Question 28

depressor labii inferioris innervation

Answer 28

marginal mandibular

Question 29

elevates and protrudes lower lip; elevates skin of chin (showing doubt)

Answer 29

mentalis

Question 30

mentalis innervation

Answer 30

marginal mandibular

Question 31

depresses mandible (against resistance); tenses skin of inferior face and neck (conveying tension and stress)

Answer 31

platysma

Question 32

platysma innervation

Answer 32

marginal mandibular

Question 33

flat digastric muscles with occipital and frontal bellies

Answer 33

occipitofrontalis

Question 34

the occipital and frontal bellies of occipitofrontalis share a common tendon called _____

Answer 34

epicranial aponeurosis

Question 35

gentle blinking

Answer 35

palpebral part of orbicularis oculi

Question 36

courses behind lacrimal sac and aids in drainage of tears (deep part of muscle)

Answer 36

lacrimal part of orbicularis oculi

Question 37

winking or squinting to prevent glare of dust

Answer 37

orbital part of orbicularis oculi

Question 38

forms oral sphincter

Answer 38

orbicularis oris

Question 39

raise upper lips

Answer 39

lavetor labii superioris and levator anguli oris

Question 40

raise corners of lips to smile

Answer 40

zygomaticus major and minor

Question 41

draws corners of lips laterally

Answer 41

risorius

Question 42

compresses cheek and holds food in mouth while chewing

Answer 42

buccinator