Frontalis

raises eyebrows;

wrinkles skin of forehead

Occipitalis

draws the scalp posteriorly

Buccinator

compresses cheek;

draws corners of the mouth laterally

Zygomaticus

raises corners of the mouth upward (smile)

Depressor anguli oris

lowers corners of mouth downward (frown)

Digastric

depresses mandible

Masseter

elevates mandible

Temporalis

elevates mandible

Sternocleidomastoid

flexes and rotates head

Splenius capitus

extends and rotates head

Trapezius

retracts scapulae;

extends head

Serratus anterior

protracts scpaulae;

thrusts arm forward;

moves arm above horizontal line

Pectoralis major

flexes, adducts, medially rotates the arm

Pectoralis minor

protracts scapulae;

raises ribs

Diaphragm

increases size of thoracic cavity

during inspiration (FLEX to INHALE)

External intercostals

elevates the ribs

internal intercostals

depress the ribs

Latissimus dorsi

extends,

adducts,

medially rotates

ARM

Deltoid

abducts,

flexes,

extends

ARM

biceps brachii

flexes,

supinates

forearm and arm

triceps brachii

extends forearm and arm

external abdominal oblique

flexes trunk;

compresses abdomen

rectus abdominus

flexes trunk;

compresses abdomen

internal abdominal oblique

flexes trunk;

compresses abdomen

transversus abdominus

compresses abdomen

psoas major

(of Iliopsoas)

flexes trunk and thigh

iliacus

(of Iliopsoas)

flexes trunk and thigh

gluteus maximus

extends thigh and trunk

gluteus medius

abducts thigh

gracilis

adducts thigh

rectus femoris

(of quadriceps femoris)

extends leg;

flexes thigh

vastus lateralis

(of quadriceps femoris)

extends leg

vastus medialis

(of quadriceps femoris)

extends leg

vastus intermedius

(of quadriceps femoris)

extends leg

biceps femoris

(of hamstrings)

flexes leg;

extends thigh;

extends trunk

semitendinosus

(of hamstrings)

flexes leg;

extends thigh;

extends trunk

semimembranosus

(of hamstrings)

flexes leg;

extends thigh;

extends trunk

sartorius

flexes thigh and leg;

rotates thigh

gastrocnemius

flexes leg;

plantar flexion of foot

soleus

plantar flexion

tibialis anterior

dorsal flexion

abduct

adduct

bring closer to body core