muscle actions

Question 1

frontalis

Answer 1

raises eye brows

Question 2

orbicularis oculi

Answer 2

closes eyes

Question 3

orbicularis oris

Answer 3

closes mouth, purses and protrudes lips

Question 4

masseter

Answer 4

elevates mandible

Question 5

temporalis

Answer 5

closes jaw

Question 6

buccinator

Answer 6

compresses teeth, holds food b/w teeth during chewing

Question 7

sternocleidomastoid

Answer 7

flexion of head

Question 8

internal intercostals

Answer 8

draws ribs together and depresses rib cage

Question 9

external intercostals

Answer 9

elevates ribs

Question 10

diaphragm

Answer 10

prime mover of inspiration, flattens on contraction

Question 11

external oblique

Answer 11

compresses abdomen and flexes vertebral column

Question 12

internal oblique

Answer 12

compresses abdomen and flexes vertebral column

Question 13

rectus abdominis

Answer 13

compresses abdomen and flexes vertebral column

Question 14

transverse abdominis

Answer 14

compresses abdominal contents

Question 15

pectoralis major

Answer 15

flexion, adduction, rotation of arm

Question 16

pectoralis minor

Answer 16

draws scapula forward and downward

Question 17

serratus anterior

Answer 17

rotates scapula

Question 18

deltoid

Answer 18

abduction, flexion, and extension of humerous

Question 19

trapezius

Answer 19

stablizes, raises, retracts and rotes scapula

Question 20

latissimus dorsi

Answer 20

extends, adducts and rotates arm

Question 21

teres major

Answer 21

extends, medially rotates and adducts humerous

Question 22

levator scalulae

Answer 22

elevates and adducts scapula

Question 23

rhomboids major

Answer 23

stablizes scapula

Question 24

rhomboids minor

Answer 24

stablizes scapula

Question 25

supraspinatus

Answer 25

initiates abduction

Question 26

infraspinatus

Answer 26

rotates humerous laterally

Question 27

subscapularis

Answer 27

chief medial rotator of humerous

Question 28

teres minor

Answer 28

rotates humerous laterally

Question 29

biceps brachii

Answer 29

flexes elbow joint and supinates forearm

Question 30

brachialis

Answer 30

forearm flexor

Question 31

triceps brachii

Answer 31

powerful forearm extensor

Question 32

pronator teres

Answer 32

pronates forearm

Question 33

flexor carpi radialis

Answer 33

flexor of wrist and abducts hand

Question 34

flexor carpi ulnaris

Answer 34

flexor of wrist and abducts hand

Question 35

extensor digitorum

Answer 35

extends the digits

Question 36

extensor carpi radialis longus

Answer 36

extends wrist and abducts wrist

Question 37

extensor carpi ulnaris

Answer 37

extends and abducts wrist

Question 38

supinator

Answer 38

supinate forearm

Question 39

sartorius

Answer 39

flexes, abducts and laterally rotates thigh

Question 40

gluteus maximus

Answer 40

abducts, rotates and extends thigh

Question 41

gluteus medius

Answer 41

abducts and medially rotates thigh

Question 42

tensor fascia latae

Answer 42

flexes, abducts and medially rotates thigh

Question 43

rectus femoris

Answer 43

extends knee and flexes thigh

Question 44

vastus lateralis

Answer 44

bends and stablizes knee

Question 45

vastus medialis

Answer 45

extends knee

Question 46

vastus intermedius

Answer 46

extends knee

Question 47

biceps femoris

Answer 47

extends thigh and flexes knee

Question 48

semitendinosus

Answer 48

extends thigh and flexes knee

Question 49

semimembranosus

Answer 49

extends thigh and flexes knee

Question 50

adductor longus

Answer 50

adducts flexes and medially rotates thigh

Question 51

adductor magnus

Answer 51

adducts, flexes and medially rotates thigh

Question 52

gracilis

Answer 52

abducts, flexes, and medially rotates thigh

Question 53

tibialis anterior

Answer 53

dorsi flexion and inverts foot

Question 54

gastrocnemius

Answer 54

planter flexes and flexes knee

Question 55

soleus

Answer 55

flexes foot