Action Muscles

Question 1

Frontalis

Answer 1

raises eyebrows

Question 2

occipitalis

Answer 2

tenses and retracts scalp

Question 3

orbicularis oris

Answer 3

compresses and purses lips (kissing)

Question 4

zygomaticus major

Answer 4

retracts and elevates corners of mouth

Question 5

levator labii superioris

Answer 5

elevates upper lip

Question 6

depressor labii inferioris

Answer 6

depresses lower lip

Question 7

buccinator

Answer 7

compresses cheeks for whistling, blowing, and sucking

Question 8

mentalis

Answer 8

elevates and protrudes lower lip (pouting)

Question 9

platysma

Answer 9

depresses mandible

Question 10

riosrius

Answer 10

draws corner of mouth to the side

Question 11

orbicularis oculi

Answer 11

closes the eye

Question 12

corrugator supercili

Answer 12

pulls brow inferiorly and anteriorly (frowning)

Question 13

superior rectus

Answer 13

eye superiorly and medially

Question 14

inferior rectus

Answer 14

eye inferiorly and medially

Question 15

lateral rectus

Answer 15

eye laterally

Question 16

medial rectus

Answer 16

eye medially

Question 17

superior oblique

Answer 17

eye inferiorly and laterally

Question 18

inferior oblique

Answer 18

eye superiorly and laterally

Question 19

medial pterygoid

Answer 19

elevates and protracts mandible and moves it from side to side

Question 20

lateral pterygoid

Answer 20

depresses mandible and moves it from side to side

Question 21

hyoglossus

Answer 21

depresses and retracts tongue

Question 22

splenius capitis

Answer 22

bilaterally: extend neck
unilaterally: laterally flex and rotate neck to same side as contracting muscle

Question 23

quadratus lumborum

Answer 23

laterally flex trunk, raise hip

Question 24

spinalis, longissimus, and iliocostalis groups

Answer 24

bilaterally: extend spine
unilaterally: lateral flexion of spine

Question 25

levator ani

Answer 25

tenses and supports pelvic floor

Question 26

coccygeus

Answer 26

tenses and supports pelvic floor

Question 27

bulbospongiosus

Answer 27

helps expel urine, propel semen, assists erection

Question 28

ischiocavernosus

Answer 28

maintains erection of penis and clitoris

Question 29

external anal sphincter

Answer 29

closes anal opening

Question 30

flexor carpi radialis

Answer 30

flexes and abducts wrist

Question 31

flexor carpi ulnaris

Answer 31

flexes and adducts wrist

Question 32

extensor carpi radialis longus

Answer 32

extends and abducts wrist

Question 33

extensor carpi ulnaris

Answer 33

extends and adducts wrist

Question 34

piriformis

Answer 34

abducts thigh at hip joint

Question 35

illopsoas

Answer 35

flexion at hip