Exam 3

Question 1

frontalis

Answer 1

raises eyebrows

Question 2

occipitalis

Answer 2

pulls scalp posteriorly

Question 3

obicularis oculi

Answer 3

closes eye

Question 4

obicularis oris

Answer 4

closes and protrudes lips

Question 5

buccinator

Answer 5

manipulate food during chewing
expels air through lips

Question 6

zygomaticus major

Answer 6

pulls angle of mouth superiorly
pulls angle of mouth laterally
smiling

Question 7

zygomaticus minor

Answer 7

raises lateral portion of upper lip (smiling)

Question 8

platysma

Answer 8

depresses lower lip
depresses mandible
tenses skin of neck

Question 9

masseter

Answer 9

elevates mandible

Question 10

temporalis

Answer 10

elevates and retracts mandible

Question 11

digastric

Answer 11

depresses mandible
fixator of the hyoid bone during swallowing

Question 12

myohyloid

Answer 12

elevates hyoid bone and floor of mouth assisting tongue to push food toward the pharynx

Question 13

sternohyoid

Answer 13

depresses hyoid bone and larynx

Question 14

sternocleidomastoid

Answer 14

bilateral action: flexes head (chin to chest)
unilateral action: flex and rotate the head to oppisite side

Question 15

scalenes (anterior, posterior, middle)

Answer 15

bilateral: flexes head when 1st rib is fixed, elevates rib cage with vertebral column (when neck is fixed)

unilateral: rotate head laterally

Question 16

external oblique and internal oblique

Answer 16

bilaterally they flex the trunk

Question 17

transversus abdominus

Answer 17

compresses abdominal contents

Question 18

rectus adbominus

Answer 18

flexes the trunk

Question 19

pectoralis major

Answer 19

flexes and adducts the arms
rotates arm medially

Question 20

pectoralis minor

Answer 20

protracts and depresses scapula

Question 21

serratus anterior

Answer 21

protracts scapula
assists in upward rotation of scapula

Question 22

diaphragm

Answer 22

flattens to lower floor of thoracic cavity, increasing volume

Question 23

external intercostals

Answer 23

elevates rib cage

Question 24

trapezius

Answer 24

extends the head
retracts scapula
depresses scapula
rotates scapula upward

Question 25

deltoid

Answer 25

abducts the arm secondarily flexes and extends arm

Question 26

latissimus dorsi

Answer 26

adducts and extends the arm rotates arm medially

Question 27

what muscles comprise the rotator cuff

Answer 27

supraspinatus infraspinatus subscapularis teres minor

Question 28

supraspinatus

Answer 28

assists abduction of arm holds the humerus and stabilizes the shoulder joint

Question 29

infraspinatus

Answer 29

rotates arm laterally stabilizes shoulder joint

Question 30

subscapularis

Answer 30

adducts and rotates arm medially stabilizes shoulder joint

Question 31

teres minor

Answer 31

rotates arm laterally stabilizes shoulder joint

Question 32

levator scapulae

Answer 32

elevates scapula

Question 33

rhomboid major and minor

Answer 33

retracts scapula

Question 34

teres major

Answer 34

adducts and extends the arm rotates arm medially

Question 35

splenius capitis

Answer 35

extends the head rotates the head to same side

Question 36

biceps brachii

Answer 36

flexes elbow supinates forearm

Question 37

brachialis

Answer 37

flexes elbow

Question 38

triceps brachii

Answer 38

extends elbow

Question 39

pronator teres

Answer 39

pronates forearm

Question 40

flexor carpi radialis

Answer 40

flexes and abducts wrist

Question 41

palmaris longus

Answer 41

flexes wrist tenses skin and fascia of palm

Question 42

flexor carpi ulnaris

Answer 42

flexes and adducts wrist

Question 43

extensor carpi radialis longus

Answer 43

extends and abducts wrist

Question 44

extensor carpi radialis brevis

Answer 44

extends and abducts wrist

Question 45

extensor digitorum

Answer 45

extends wrist extends fingers

Question 46

extensor digiti minimi

Answer 46

extends little finger

Question 47

extensor carpi ulnaris

Answer 47

extends and adducts wrist

Question 48

brachioradialis

Answer 48

flexes elbow (forearm in mid-positon between supine and prone)

Question 49

iliopsoas

Answer 49

flexes hip laterally bends vertebral column

Question 50

sartorius

Answer 50

flexes knee flexes, abducts, laterally rotates hip

Question 51

quadriceps femoris

Answer 51

rectus femoris vastus muscles

Question 52

rectus femoris

Answer 52

flexes hip and extends knee

Question 53

vastus muscle

Answer 53

extend knee; stabilize knee

Question 54

pectineus

Answer 54

adducts, medially rotates and flexes hip

Question 55

adductor longus

Answer 55

adducts hip medially rotates hip flexes hip

Question 56

adductor magnus

Answer 56

adducts hip medially rotates hip flexes hip

Question 57

adductor brevis

Answer 57

adducts hip medially rotates hip flexes hip

Question 58

gracilis

Answer 58

adducts hip medially rotates and flexes hip flexes knee

Question 59

biceps femoris

Answer 59

extends hip flexes knee

Question 60

semitendinosus

Answer 60

extends hip flexes knee

Question 61

semimembranosus

Answer 61

extends hip flexes knee

Question 62

gluteus maximus

Answer 62

extends and laterally rotates hip

Question 63

gluteus medius

Answer 63

abducts and medially rotates hip stabilizes pelvis when walking

Question 64

tesnor fascia latae

Answer 64

abducts and medially rotates hip

Question 65

tibialis anterior

Answer 65

dorsiflexion inversion

Question 66

extensor hallicus longus

Answer 66

extend great toe inversion

Question 67

extensor digitorum longus

Answer 67

extends digits 2-5 inversion

Question 68

fibularis longus

Answer 68

eversion weak plantarflexion

Question 69

fibularis brevis

Answer 69

eversion weak plantarflexion

Question 70

gastrocnemius

Answer 70

flex knee plantarflexion

Question 71

soleus

Answer 71

plantarflexion

Question 72

tibialis posterior

Answer 72

plantarflexion inversion

Question 73

flexor hallicus longus

Answer 73

flexes great toe

Question 74

flexor digitorum longus

Answer 74

flexes digits 2-5