muscles summative (no pectoral girdle)

A

biceps femoris

B

semitendinosus

C

semimembranosus

C

tibialis anterior

D

extensor digitorum longus

A

gastrocnemius

B

soleus

D

popliteus

A

flexor digitorum longus

D

tibialis posterior

D

gastrocnemius

C

popliteus

A

gastrocnemius

B

soleus

A

tibialis anterior

B

gastrocnemius

C

Soleus

A

tibialis anterior

B

extensor digitorum longus

biceps femoris action

flexes knee, extends and laterally rotates hip

semitendinosus action

flexes knee, extends and laterally rotates hip

semimembranosus

flexes knee, extends and laterally rotates hip

tibialis anterior action

prime mover of dorsiflexion, foot inversion

extensor digitorum longus

prime mover of toe extension, dorsiflexion of foot

gastrocnemius action

extension (plantar flexion) at ankle, foot inversion, flex knee (superficial)

soleus action

plantar flex foot (extension at ankle), locomotor/postural help for walking/running/dancing (deep)

popliteus action

flexion at knee, medial rotation of tibia, lateral rotation of femur (unlocks knee)

flexor digitorum longus action

plantar flex, inversion, flexion at toe joints, allows toes to grip

tibialis posterior action

prime mover of foot inversion, adducts foot, extends at ankle/plantar flexes foot

Biceps brachii action

Flexes elbow; supinates forearm; weak shoulder flexion

Brachialis action

Major elbow/forearm flexor

Brachioradialis action

Flexes elbow; stabilizes elbow

Triceps brachii action

Prime mover elbow extension; extension & adduction at shoulder

Pronator teres action

Pronation

Flexor carpi radialis action

Powerful wrist flexor; abducts hand

Palmaris longus action

Tenses skin/fascia of palm; wrist flexion

Flexor carpi ulnaris action

Powerful wrist flexor; adducts hand

Flexor digitorum superficialis action

Flexes wrist & middle phalanges of digits 2-5 (speedy flexion & flexion against resistance)

Flexor digitorum profundus action

Flexes distal interphalangeal joints (slow acting flexor of fingers); helps wrist flexion

Extensor carpi radialis longus action

Extends & abducts wrist

Extensor carpi radialis brevis action

Extends & abducts wrist

Extensor digitorum action

Prime mover finger extension; wrist extension; abducts (Flares) fingers

Extensor carpi ulnaris action

Extends & adducts wrist

Supinator action

Supination

Extensor indicis action

Extends & adducts index finger

A

Biceps brachii

B

Brachialis

C

Brachioradialis

D

Triceps brachii

E

Pronator teres

F

Flexor carpi radialis

G

Palmaris longus

H

Flexor carpi ulnaris

I

Flexor digitorum superficialis

J

Flexor digitorum profundus

M

Extensor digitorum

N

Extensor carpi ulnaris

L

Extensor carpi radialis brevis

K

Extensor carpi radialis longus

O

Supinator

P

Extensor indicis

1

erector spinae

orange

iliocostalis

purple

longissimus

green

spinalis

A

external intercostals

B

internal intercostals

E

rectus abdominis

D

external obliques

C

internal obliques

F

transverse abdominis

iliocostalis action

extend and laterally flex vertebral column

longissimus action

extend and laterally flex vertebral column, extends and turns head

spinalis action

extends vertebral column

external intercostals action

elevate ribs and help inspiration

internal intercostals action

depress ribs and aid in expiration

diaphragm action

prime mover of inspiration, contraction expands thoracic cavity and compresses abdominopelvic cavity

rectus abdominis action

sit ups, depresses ribs, flexes vertebral column, compresses abdomen

external obliques action

compresses abdomen, depresses ribs, flexes spine

internal obliques action

compresses abdomen, depresses ribs, flexes spine

transverse abdominis action

compresses abdomen

A

frontalis

J

occipitalis

B

corrugator supercilii

D

orbicularis oculi

E

zygomaticus

G

risorius

I

levator labii superioris

M

depressor labii inferioris

L

depressor anguli oris

F

orbicularis oris

H

mentalis

K

buccinator

J

masseter

C

temporalis

N

sternocleidomastoid

frontalis action

raises eyebrows and wrinkles forehead

occipitalis actions

tenses and retracts scalp

corrugator supercilii action

wrinkles brow

orbicularis oculi action

closes eye