Muscles of the body

Frontalis

raises eyebrows, wrinkles forehead

Zygomaticus

raises lateral corners of mouth upward (smiling)

Masseter

closes jaw

Temporalis

Sternocleidomastoid

flexes neck; rotates head

Diaphragm

breathing muscle below the thoracic cavity

External oblique

flexes and rotates vertebral column

Rectus abdominis

flexes and rotates vertebral column

Pectoralis major

raises and lowers arms

Serratus anterior

"fingers"

Trapezius

raises & lowers shoulders

Deltoid

abducts (raises) upper arm

Latissimus dorsi

Extends the arm; draws the shoulder downward and backward

Action of latissimus dorsi

arm extension, also adduction and medial rotation

Triceps brachii

extends forearm

Biceps brachii

flexes forearm

Extensor digitorum

Action of extensor digitorum

extends the fingers

Sartorius

Flexes thigh on hip

Gluteus maximus

extends thigh

Three posterior muscles grouped to make hamstrings

-biceps femoris

-semitendinosus

-semimembranosus

Action of the three hamstring muscles

flex the leg at the knee

Biceps femoris

Semitendinosus

Semimembranousus

Tibialis anterior

permits walking on heels

Gastrocnemius

points toes and flexes lower leg

Soleus

extends foot

Zygomaticus

raises corner of mouth

orbicularis oculi

Closes eyelids; used in blinking, winking, and squinting

orbicularis oris

compresses and purses lips

Occipitalis

moves scalp back

rectus femoris

extends leg at knee

Sternohyoid

Brachialis

flexes forearm; synergist to biceps brachii

pronator teres

pronates forearm

Brachioradialis

flexes forearm

flexor carpi radialis

flexes wrist and abducts hand

palmaris longus

flexes wrist

Illiopsoas

flexes hip

Pectineus

adducts thigh

tensor fasciae latae

flexes and abducts thigh

adductor longus

adducts thigh

Gracilis

adducts thigh

vastus lateralis

extends knee

vastus medialis

extends knee

-Rectus femoris

-vastus medialis

-vastus lateralis

-vastus intermedius

4 muscles that make up the quadriceps group

Peroneus Longus

plantar flexes and everts foot

extensor digitorum longus

extends toes

Infraspinatus

rotates arm laterally

teres major

extends, adducts, and medially rotates arm

teres minor

rotates arm laterally

internal oblique

flexes and rotates vertebral column

flexor carpi ulnaris

Flexes and adducts wrist

extensor carpi ulnaris

extends and adducts wrist

gluteus medius

abducts thigh

iliotibial band

abductor of thigh

adductor magnus

adducts thigh

Achilles tendon

attaches the gastrocnemius muscle to the heel bone

Abdominis

abdomen

brachii

arm

capitis

head

carpi

wrist

Cervicis

neck

digitorum

fingers

femoris

femur or thigh

Gluteal

buttock

hallucis

big toe

oculi

eye

oris

mouth

pectoralis

chest

pollicis

thumb

extensor

increases joint angle

depressor

lowers or depresses a body part

erector

holds erect/up or straight

adductor

muscle that moves a part toward the midline

Supinator

turns palm anteriorly (front)

levator

raises or elevates a body part

flexor

decreases joint angle

abductor

muscle that moves a part away from the midline

pronator

turns palm posteriorly (back/away)

oblique

at an angle

orbicular

circular

rectus

straight

transversus

across

Anterior

front

external

outside

infra

below

intercostal

between the ribs

internal

inside

posterior

back

profundus

deep

superficialis

near the surface

supra

above

quadriceps

four heads

triceps

three heads

biceps

two heads

longus

long

vastus

wide

brevis

short