OIA: Action

Question 1

Orbicularis Oris

Answer 1

closes and protrudes lips

Question 2

Buccinator

Answer 2

compresses cheek as in whistling and sucking, holds food between teeth during mastication

Question 3

Masseter

Answer 3

closes jaw

Question 4

Platysma

Answer 4

pulls corners of mouth inferiorly

Question 5

Zygomaticus

Answer 5

raises corner of the mouth

Question 6

Orbicularis Oculi

Answer 6

blinks and closes eyes

Question 7

Epicranius Frontalis

Answer 7

elevating the eyebrows

Question 8

Temporalis

Answer 8

closes jaw

Question 9

Epicranius Occipitalis

Answer 9

move the scalp towards the posterior of the skull

Question 10

Sternocleidomastoid

Answer 10

flexes neck and rotates head

Question 11

External Oblique

Answer 11

flexes and rotates vertebral column

Question 12

Internal Oblique

Answer 12

helps maintain movement of the trunk and abdominal pressure

Question 13

Rectus Abdominis

Answer 13

flexes vertebral column

Question 14

Transversus Abdominis

Answer 14

compresses abdominal contents

Question 15

Linea Alba

Answer 15

maintain abdominal muscles in a certain proximity to each other

Question 16

Pectoralis Major

Answer 16

abducts and flexes humerus

Question 17

Pectoralis Minor

Answer 17

abducts and rotates scapula, elevates ribs

Question 18

Trapezius

Answer 18

flexes neck and rotates head

Question 19

Latissimus Dorsi

Answer 19

extends and adducts humerus

Question 20

Rhomboid

Answer 20

elevates, adducts, rotates scapula

Question 21

Bracioradialis

Answer 21

flex, supinate, pronate arm

Question 22

Flexor Carpi Radialis

Answer 22

flexes wrist, abducts hand

Question 23

Palmaris Longus

Answer 23

wrist joint, wrist flexion

Question 24

Extensor Digitorum

Answer 24

extends fingers and wrists

Question 25

Biceps Brachii

Answer 25

flexes elbow and supinates forearm

Question 26

Triceps Brachii

Answer 26

flexes elbow and supinates forearm

Question 27

Deltoid

Answer 27

abducts humerus

Question 28

Brachialis

Answer 28

flexes elbow

Question 29

Levator Scapulae

Answer 29

elevate and rotate scapula

Question 30

Teres Major

Answer 30

extends, rotates arm, adducts

Question 31

Teres Minor

Answer 31

extends, rotates arm

Question 32

Supraspinatus

Answer 32

resists gravitational forces

Question 33

Infraspinatus

Answer 33

rotates shoulder

Question 34

Tensor Fasciae Latae

Answer 34

thigh rotation, stabilize hip and knee joints

Question 35

IT Band (Iliotibial)

Answer 35

stabilize the hip and knee

Question 36

Sartorius

Answer 36

flexes thigh on hip

Question 37

Rectus Femoris

Answer 37

extend knee; flexes hip on thigh

Question 38

Vastus Lateralis

Answer 38

extend knee; flexes hip on thigh

Question 39

Vastus Medialis

Answer 39

extend knee; flexes hip on thigh

Question 40

Gracilis

Answer 40

thigh flexion, thigh adduction, knee joint, leg flexion, leg internal rotation

Question 41

Biceps Femoris

Answer 41

flex knee and extend hip

Question 42

Gluteus Medius

Answer 42

abducts thigh; steadies pelvis during walking

Question 43

Gluteus Maximus

Answer 43

extends hip

Question 44

Adductor Longus

Answer 44

adducts thigh

Question 45

Semitendinosus

Answer 45

flex knee and extend hip

Question 46

Semumembranosus

Answer 46

flex knee and extend hip

Question 47

Peroneus Longus

Answer 47

plantar flexes and everts foot

Question 48

Extensor Digitorum Longus

Answer 48

extended toes and dorsiflexes foot

Question 49

Tibialis Anterior

Answer 49

dorsiflexes and inverts foot

Question 50

Soleus

Answer 50

plantar flexes foot

Question 51

Gastrocnemius

Answer 51

plantar flexes and flexes knee