10- Muscles of the Face

Question 0

Obicularis oculi

Answer 0

Sphincter muscle of eyelid, surrounds rim of orbit.

Protects eyes from intense light, produces blinking squinting, and draws eyebrows inferiority.

Question 1

Corrugator supercilii

Answer 1

Small muscle, associated with obicularis oculi.

Draws eyebrows together, wrinkles skin of forehead vertically.

Question 2

Zygomaticus

Answer 2

Cheekbone to corner of the mouth.

Raises lateral corners, smiling muscle.

Question 3

Risorius

Answer 3

Slender, inferior and lateral to zygomaticus.

Draws corners of lip laterally. Tenses lips, synergist of zygomaticus.

Question 4

Levator labii superioris

Answer 4

Between orbicularis oris and inferior eye margin.

Opens lips, raises and furrows upper lip.

Question 5

Depressor labii inferioris

Answer 5

From mandible to lower lip.

Draws lower lip inferiority. Pout.

Question 6

Depressor anguli oris

Answer 6

Lateral to depressor labii inferioris.

Zygomaticus antagonist, draws corners of mouth downward and laterally. Tragedy mask grimace.

Question 7

Orbicularis oris

Answer 7

Muscles of the lips, fibers run in different directions, mainly circulatory.

Closes lips, purses and protrudes lips. Kissing and whistling.

Question 8

Mentalis

Answer 8

V shaped muscle mass on chin.

Protrudes lower lip, wrinkles chin.

Question 9

Buccinator

Answer 9

Horizontal cheek muscle, muscle of cheek, deep to masseter.

Draws corner of mouth laterally, whistling and sucking, holds food between teeth during chewing, developed in nursing infants.

Question 10

Platysma

Answer 10

Unpaired, not strictly a head muscle , plays a role in facial expression.

Depress mandible, pulls lower lip back and down . Produces downward sag of mouth, tenses skin of neck.