Names & Primary Actions Of Muscles

Front 1

Frontalis

Back 1

Raises eyebrows

Front 2

Orbicularis Oculi

Back 2

Blinks and closes eyes

Front 3

Orbicularis Oris

Back 3

Closes and protrudes lips

Front 4

Temporalis

Back 4

closes jaw

Front 5

Zygomaticus

Back 5

Raises corner of mouth

Front 6

Masseter

Back 6

closes jaw

Front 7

Buccinator

Back 7

Compresses cheek as in whistling and sucking; holds food between teeth during chewing

Front 8

Sternocleidomastoid

Back 8

Flexes neck; rotates head.

Front 9

Platysma

Back 9

Pulls corners of mouth inferiorly

Front 10

Pectoralis major

Back 10

adducts and flexes humerus

Front 11

Rectus abdominis

Back 11

flexes vertebral column

Front 12

External Oblique

Back 12

flexes and rotates vertebral column

Front 13

biceps brachii

Back 13

flexes elbow and supinates forearm

Front 14

brachialis

Back 14

flexes elbow

Front 15

Deltoid

Back 15

abducts arm

Front 16

Iliopsoas

Back 16

flexes hip

Front 17

Adductor muscles

Back 17

adduct thigh

Front 18

Satorius

Back 18

flexes thigh on hip

Front 19

quadriceps group

Back 19

All extend knee; rectus femoris also flexes hip on thigh

Front 20

tibialis anterior

Back 20

dorsiflexes and inverts foot

Front 21

Extensor digitorum

Back 21

extends toes and dorsiflexes foot

Front 22

fibularis muscles

Back 22

plantar flex and evert foot

Front 23

Trapezuis

Back 23

extends neck and adducts scapula

Front 24

Latissimus dorsi

Back 24

extends and adducts humerus

Front 25

Erector spinae

Back 25

extends back

Front 26

quadratus lumborum

Back 26

flexes spine laterally; extends spine

Front 27

Deltoid

Back 27

abducts humerus

Front 28

triceps brachii

Back 28

extends elbow

Front 29

flexor carpi radialis

Back 29

flexes wrist and abducts hand

Front 30

flexor carpi ulnaris

Back 30

flexes wrist and adducts hand

Front 31

flexor digitorum superficialis

Back 31

flexes wrist and fingers

Front 32

extensor carpi radialis

Back 32

extends wrist and abducts hand

Front 33

extensor digitorum

Back 33

extends fingers and wrist

Front 34

Gluteus maximus

Back 34

extends hip (when forceful extension is required)

Front 35

Gluteus Medius

Back 35

abducts thigh; steadies pelvis during walking

Front 36

Hamstring Muscles

Back 36

flex knee and extend hip

Front 37

Gastrocnemius

Back 37

plantar flexes foot and flexes knee

Front 38

soleus

Back 38

plantar flexes foot

Front 39

muscles that oppose or reverse a movement

Back 39

antagonist

Front 40

The muscle that has the major responsiblity for causing a particular movement.

Back 40

prime mover

Front 41

help prime movers by producing the same movement or by reducing undesirable movements.

Back 41

synergists

Front 42

Specialized synergists that hold a bone still or stabilize the origin of a prime mover so all the tension can be used to move the insertion bone.

Back 42

fixator

Front 43

List the 7 ways to name muscles.

Back 43

1. Direction of muscle fibers
2. Relative size of the muscle
3. Location of the muscle
4. Number of origins
5. Location of the muscle's origin and insertion
6. Shape of the muscle
7. Action of the muscle