Action

Question 1

Frontal belly of occipitofrontalis

Answer 1

Moves scalp, wrinkles forehead, elevates eyebrows

Question 2

Occipital belly of occipitofrontalis

Answer 2

Moves scalp slightly posterior (wiggle ears)

Question 3

Orbicularis oris

Answer 3

Closes lips, puckers lips

Question 4

Platysma

Answer 4

Pulls lower lip inferiorly, tenses skin of neck and contributes to depression of mandible

Question 5

Buccinator

Answer 5

Compresses cheek, holds food between teeth during chewing, aids in sucking and blowing

Question 6

Temporalis

Answer 6

Elevates and retracts mandible

Question 7

Masseter

Answer 7

Elevates and protracts mandible; prime mover of jaw closure

Question 8

Medial and lateral pterygoid

Answer 8

Elevate and protract mandible and move it side to side during chewing

Question 9

Sternocleidomastoid

Answer 9

Both: flexion of head and neck
One: turns head to opposite side of muscle contracting

Question 10

Splenis capitus

Answer 10

Both: pulls head back, extends and hyperextends
One: turns head to same side

Question 11

Semispinalis capitus

Answer 11

Both: pulls head back, extends and hyperextends
One: turns head to same side

Question 12

External intercostals

Answer 12

Elevates ribs during inhalation (move up and out like bucket handle)

Question 13

Internal intercostals

Answer 13

Depresses ribs during forced exhalation

Question 14

Diaphragm

Answer 14

Moves inferiorly to expand thoracic cavity

Question 15

External oblique

Answer 15

Both: compress abdomen, flex vertebral column
One: lateral flexion of vertebral column

Question 16

Internal oblique

Answer 16

Both: compress abdomen, flex vertebral column
One: lateral flexion of vertebral column

Question 17

Transverse abdominus

Answer 17

Compresses the abdomen

Question 18

Rectus abdominus

Answer 18

Flexes vertebral column and compresses abdominal wall, forceful exhalation

Question 19

Pectoralis minor

Answer 19

Protracts and depresses the scapula (hunch shoulders)

Question 20

Serratus anterior

Answer 20

Prime mover that protracts and depresses scapula, stabilizes the scapula, and superiorly rotates scapula

Question 21

Rhomboid major

Answer 21

Retracts and elevates scapula and inferiorly rotates scapula

Question 22

Rhomboid minor

Answer 22

Retracts and elevates scapula and inferiorly rotates scapula

Question 23

Trapezius

Answer 23

Elevates and retracts the scapula, draws head back

Question 24

Latissimus Dorsi

Answer 24

Prime mover of arm extension and draws it downward and backward while rotating medially

Question 25

Pectoralis major

Answer 25

Prime mover of arm flexion, also adducts and medially rotates arm

Question 26

Deltoid

Answer 26

Anterior: flex and medially rotate arm Middle: prime movers of abduction Posterior: extend and laterally rotate arm

Question 27

Coracobrachialis

Answer 27

Adductor and flexes arm

Question 28

Teres major

Answer 28

extends and adducts arm at shoulder joint, drawing it down and back while rotation medially

Question 29

Subscapularis

Answer 29

Medially rotates arm, wind up to pitch

Question 30

Supraspinatus

Answer 30

Abducts the arm as when you start to execute pitch

Question 31

Infraspinatus

Answer 31

Adductor and laterally rotates arm like slowing your arm down

Question 32

Teres minor

Answer 32

Adductor and laterally rotates arm like slowing it down after pitch

Question 33

Biceps brachii

Answer 33

Flexes elbow at joint and powerful supination

Question 34

Triceps brachii

Answer 34

Primary extensor of elbow joint

Question 35

Psoas major

Answer 35

Flexes thigh

Question 36

Iliacus

Answer 36

Flexes thigh

Question 37

Gracilis

Answer 37

Adductor and flexes thigh, flexes leg

Question 38

Tensor fasciae latae

Answer 38

Abducts thigh and medially rotates thigh

Question 39

Gluteus Maximus

Answer 39

Extends and rotates thigh laterally

Question 40

Rectus femoris

Answer 40

Extends leg, flexes thigh

Question 41

Vastus lateralis

Answer 41

Extends leg, flexes thigh

Question 42

Vastus medialis

Answer 42

Extends leg

Question 43

Vastus intermedius

Answer 43

Extends leg

Question 44

Biceps femoris

Answer 44

Extends thigh(long head only), flexes knee, laterally rotates leg

Question 45

Semimembranosus

Answer 45

Extends thigh and flexes knee, medially rotates leg

Question 46

Semitendinosus

Answer 46

Extends thigh and flexes knee, medially rotates leg

Question 47

Tibialis anterior

Answer 47

Dorsiflexes foot and inverts foot

Question 48

Peroneus longus

Answer 48

Everts foot and a weak plantar flexor

Question 49

Gastrocnemius

Answer 49

Flexes leg and plantar flexes foot

Question 50

Soles

Answer 50

Plantar flexes foot

Question 51

Sartorius

Answer 51

Flexes thigh and laterally rotates thigh, flexes leg and rotates it medially