Sphenoid Face

Question 1

Corrugator Supercilii main actions

Answer 1

draws eyebrows medially and inferiorly creating vertical wrinkles above the nose (demonstrating concern or worry)

Question 2

Procerus plus transverse part of nasalis main actions

Answer 2

depresses medial end of eyebrow; wrinkles skin over dorsal or nose (converting disdain or dislike)

Question 3

Alar part of nasalis plus elevator labii superiors alaeque nasii main action

Answer 3

depresses ala laterally, delaying anterior nasal aperture (flaring nostrils, as during anger or exertion)

Question 4

Oribularis ores (oral sphincter) main actions

Answer 4

torus closes oral tissues; phasic contraction compresses and protrudes lips (kissing) or resists distention (when blowing)

Question 5

Levator labii superiors main actions

Answer 5

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

Question 6

Zygomaticus minor main actions

Answer 6

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

Question 7

Buccinator (cheek muscle) main actions

Answer 7

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

Question 8

Zygomaticus major main actions

Answer 8

part of dilators of mouth; elevate labial commissurre- bilaterally to smile (happiness); unilaterally to sneer (distain)

Question 9

Levator anguli oris main actions

Answer 9

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

Question 10

Risorius main actions

Answer 10

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

Question 11

Depressor anguli oris main actions

Answer 11

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

Question 12

Depressor labii inferioris main actions

Answer 12

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

Question 13

Mentalis main actions

Answer 13

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

Question 14

Platsyma main actions

Answer 14

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

Question 15

Occipitofrontalis front belly main actions

Answer 15

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

Question 16

Occipitofrontalis occipital belly main actions

Answer 16

retracts scalp; increasing effectiveness or frontal belly

Question 17

Orbicularis oculi (oral sphincter) main actions

Answer 17

closes eyelids: palpebral part does so gently; orbital part tightly (winking)