axial muscle actions

Question 1

epicranius m.

Answer 1

move scalp, wrinkle brow, wiggle ears

Question 2

orbicularis oculi m.

Answer 2

close eyelids

Question 3

corrugator supercilii m.

Answer 3

draw eyebrow inferomedially

Question 4

orbicularis oris m.

Answer 4

close mouth, purse lips

Question 5

levator labii superioris m.

Answer 5

elevate upper lip

Question 6

levator anguli oris m.

Answer 6

elevate angle of mouth

Question 7

zygomaticus major m.

Answer 7

draw upper lip posterosuperiorly

Question 8

zygomaticus minor m.

Answer 8

draw upper lip superolaterally

Question 9

depressor labii inferioris m.

Answer 9

depress lower lip

Question 10

depressor anguli oris m.

Answer 10

depress corner of mouth

Question 11

nasalis m.

Answer 11

wrinkle nose, dilate nostrils

Question 12

temporalis m.

Answer 12

elevate mandible

Question 13

masseter m.

Answer 13

elevate mandible

Question 14

lateral pterygoid m.

Answer 14

protract/ depress mandible

Question 15

medial pterygoid m.

Answer 15

elevate mandible, move mandible laterally

Question 16

platysma

Answer 16

depress lower lip, wrinkle skin of neck and upper chest

Question 17

sternocleidomastoideus m.

Answer 17

turn head to opposite side, flex joints of cervical vertebrae

Question 18

pectoralis major m.

Answer 18

flex shoulder joint, adduct superior limb @ shoulder joint, medially rotate superior limb

Question 19

pectoralis minor m.

Answer 19

draw scapula anteroinferiorly, elevate ribs

Question 20

serratus anterior m.

Answer 20

rotate scapula, draw scapula forward, elevate ribs

Question 21

external intercostal mm.

Answer 21

elevate ribs, maintain tension in intercostal spaces

Question 22

internal intercostal mm.

Answer 22

depress ribs, maintain tension

Question 23

rectus abdominis m.

Answer 23

draw thorax downward, compress abdomen

Question 24

external abdominal oblique m.

Answer 24

draw thorax downward, compress abdomen, rotate vertebral column

Question 25

internal abdominal oblique m.

Answer 25

draw thorax downward, compress abdomen, rotate vertebral column

Question 26

transversus abdominis m.

Answer 26

compress abdomen

Question 27

trapezius m.

Answer 27

draw head laterally, draw head posteriorly, rotate scapul

Question 28

latissimus dorsi m.

Answer 28

adduct superior limb @ shoulder joint, rotate superior limb medially, extend shoulder joint

Question 29

rhomboideus major m.

Answer 29

retract scapula medially

Question 30

rhomboideus minor m.

Answer 30

draw scapula toward vertebral column, draw scapula slightly superiorly

Question 31

levator scapulae m.

Answer 31

elevate scapul

Question 32

spinalis m.

Answer 32

extend vertebral joints, lateral flexion of vertebral joints

Question 33

longissimus m.

Answer 33

extend vertebral joints, lateral flexion of vertebral joints

Question 34

iliocostalis m.

Answer 34

extend vertebral joints, lateral flexion of vertebral joints