Facial and Neck Muscles

Question 1

Occipitalis

Answer 1

overlies occipital and part of the temporal bone. Fixes aperneurosis and pulls scalp posteriorly

Question 2

Frontalis

Answer 2

covers forehead and dome of skull. elevates the eyebrows -wrinkles forehead skin horizontally

Question 3

Orbicularis Oculi

Answer 3

Sphincter muscle of eyelid. surround rim of orbit.Closes the eye, produces blinking and squinting

Question 4

Zygomaticus

Answer 4

muscle pair extending diagonally from cheekbone to corner of mouth. Smiling muscle, raises lateral corners of the mouth

Question 5

Orbicularis Oris

Answer 5

multilayered muscle, most run circularly around the mouth. Closes the lips, purses, kissing, and whistling

Question 6

Mentalis

Answer 6

V shaped muscle pair on chin. Wrinkle chin

Question 7

Platysma

Answer 7

unpaired thin sheet like muscle over the neck. tenses skin of neck, used in shaving

Question 8

Levator labii superioris

Answer 8

muscle b/n orbicularis oris and inferior eye margin. Opens lips, elevates upper lip

Question 9

Depressor Labii inferioris

Answer 9

small muscle running from mandible to lower lip. depresses lower lip

Question 10

Buccinator

Answer 10

principle muscle of the cheek and deep to masseter. compresses cheek for sucking and whistling

Question 11

Masseter

Answer 11

Powerful muscle that covers lateral aspect of ramus of mandible. closes jaw, elevates mandible $

Question 12

Temporalis

Answer 12

fan shaped covers part of the temporal, frontal and parietal bones. Closes jaw, elevates and retracts mandible $

Question 13

Medial and lateral pterygoid

Answer 13

deep two headed muscle that runs along internal surface of mandible and is largely concealed by the pterygoid bone. protract mandible and grinding movements

Question 14

Genioglossus

Answer 14

fan shaped muscle bulk of inferior part of tongue. protracts tongue

Question 15

Digastric

Answer 15

consists of two bellies united by an intermediate tendon, forming a V shape under the chin, one origin on chin one origin on mastoid insertion on the hyoid bone where it meets. Open mouth and depress mandible.

Question 16

Stylohyoid

Answer 16

parallels posterior bellies of digastric muscle, laterally, styloid process to hyoid bone. elevates and retracts hyoid.

Question 17

Mylohyoid

Answer 17

flat triangular muscle deep to the digastric, floor of anterior mouth, runs along the mandible to the hyoid bone. elevates hyoid bone and floor of mouth

Question 18

Geniohyoid

Answer 18

narrow muscle runs from chin to hyoid bone deep to mylohyoid. elevates and protractes the hyoid

Question 19

Sternohyoid

Answer 19

most medial of the neck, thin partially covered by sternocleidomastoid, from sternum/clavicle to hyoid bone. depresses larynx and hyoid bone

Question 20

Sternothyroid

Answer 20

b/n sternum and thyroid cartilage. depresses larynx and thyroid cartilage

Question 21

Omohyoid

Answer 21

straplike muscle with two bellies united by an intermediate tendon, lateral to sternohyoid, covered partially by sternocleidomastoid. depresses and retracts hyoid bone

Question 22

Thyrohyoid

Answer 22

appears as suppra continuation of sternothyroid muscle, b/n thyroid cartilage and hyoid bone. depresses hyoid bone or elevates the larynx

Question 23

Sternocledomastoid

Answer 23

two headed deep to platysma, anterolateral surface of the neck. flexes and laterally rotates the head $

Question 24

Scalenes

Answer 24

located laterally on the neck, deep to platysma and sternocleidomastoid. Elevates first two ribs, flex and rotate the neck

Question 25

Splenius

Answer 25

Broad bipartite superficial muscle, extending from upper thoracic vertebrae to skull. extend the head

Question 26

Erector Spinae

Answer 26

Prime movers of back extension. Provides for proper spine curvature

Question 27

Semispinalis

Answer 27

extends from thoracic region to head in the back, deep to trapezius. extend vertebral column and head, rotates them to opposite sides

Question 28

Corrugator

Answer 28

small muscle to eyebrow, acts with orbiculares oculi. draws eyebrows medially and inferiorly.

Question 29

Risorious

Answer 29

slender muscle inferior to the zygomaticus. draws corners of lips laterally

Question 30

Levator Palpebrae Superioris

Answer 30

anterior to posterior roof of the orbit. Lifter of the upper eyelid.

Question 31

Trapezius

Answer 31

flat triangular superficial muscle of the upper thorax. stabilizes, elevates, retracts, and rotates the scapula $