Muscle Function (Definitions)

Question 1

Flex/Flexion

Answer 1

bend or become bent

Question 1

Rotate

Answer 1

move in a circle around an axis

Question 2

Compress

Answer 2

flatten, squeeze or press

Question 3

Lateral

Answer 3

move away from center line of body

Question 4

Extend/Extension-

Answer 4

straighten out

Question 5

Retract/Retraction

Answer 5

to draw back towards body

Question 6

Adduct

Answer 6

move toward center line of body

Question 7

Adductor longus

Answer 7

rotate thigh laterally, flexes thigh, draws thigh toward body

Question 8

Sartorius

Answer 8

bends lower leg at knee, bends and rotates thigh at hip

Question 9

Quadriceps femoris

Answer 9

flexes thigh at hips, extends leg at knee

Question 10

Tibialis anterior

Answer 10

flexes foot toward knee

Question 11

Gastrocnemius

Answer 11

extend foot away from knee, bends lower leg at knee

Question 12

Hamstring group

Answer 12

draws thigh backward, bends knee

Question 13

Gluteus maximus

Answer 13

extends and rotates thigh when walking or climbing

Question 14

Biceps femoris

Answer 14

knee flexion, internal and external rotation, hip extension

Question 15

Soleus

Answer 15

pushing off ground while walking

Question 16

Extensor digitorum longus

Answer 16

extend foot at ankle, extend four smaller toes

Question 17

Gluteus medius

Answer 17

rotation of thigh outward from center of body

Question 18

Pectineus

Answer 18

flexing and adducting thigh

Question 19

Rectus femoris

Answer 19

extend or raise knee, flex thigh

Question 20

Semitendinosus

Answer 20

flex knee, extend hip

Question 21

External oblique

Answer 21

lateral twisting of body, compress abdomen

Question 22

Iliopsoas

Answer 22

flex hip, stabilize hip and lower back

Question 23

Rectus abdominis

Answer 23

compress abdomen and chest, bend backbone

Question 24

Zygomaticus major

Answer 24

draw mouth angle upward and outward (smiling)

Question 25

Temporalis

Answer 25

used for chewing

Question 26

Masseter

Answer 26

used for chewing

Question 27

Sternocleidomastoid

Answer 27

flexes neck, moves head, raises sternum

Question 28

Triceps brachii

Answer 28

straightens arm at elbow

Question 29

Pectoralis major

Answer 29

flexes and rotates arm

Question 30

Serratus anterior

Answer 30

raises arm, draws shoulder blade forward, useful in pushing

Question 30

Latissimus dorsi

Answer 30

rotates and draws arm backwards, helps in climbing

Question 31

Trapezius

Answer 31

raises, turns and lowers the shoulder, turns head

Question 32

Deltoid

Answer 32

raises arm

Question 33

Biceps brachii

Answer 33

bends forearm at elbow, rotates hand

Question 34

Triceps

Answer 34

extension and retraction of the forearm

Question 35

Flexor carpi radialis

Answer 35

flexion of the wrist, abduction of hand and wrist

Question 36

Brachioradialis

Answer 36

flexion of elbow joint, turn hand palm up/down

Question 37

Thenar muscles

Answer 37

opposable thumb

Question 38

Extensor digitorum

Answer 38

extension of fingers 2-5

Question 39

Extensor carpi ulnaris

Answer 39

extend and bend wrist