Anatomy Muscle Identification

occipitofrontalis

(raises eyebrows)

orbicularis oculi

(closes eyes)

orbicularis oris

(purses lips)

• zygomaticus minor (green) and major

• elevates and retracts lips/mouth

buccinator

compresses cheeks

(must know function)

platysma

depress mandible and tense neck

sternocleidomastoid

flex neck, rotate head, depress hyoid and larynx

rectus abdominis

vertebral compression and flexion

external oblique

vertebral flexion, compression and rotation

• internal oblique (under external oblique)

• vertebral flexion, compression and rotation

transversus abdominis

deepest layer

compress abdomen

diaphragm

quiet respiration

trapezius

• elevation, depression, rotation

(must know function)

• serratus anterior

• abduction, upward rotation

• rhomboid minor

• rhomboid major

(abduction, downward rotation)

• pectoralis minor

• abduction, downward rotation

• latissimus dorsi

• adduct, inward rotation, extension

teres major

• adduct, inward rotation, extension

subscapularis

• adduction, inward rotation

pectoralis major

• flexion, inward rotation

biceps brachii

triceps brachii

• extension

deltoid

• abduction

• inward and outward rotation/flexion

flexor carpi radialis

• flexion of wrist and hand

palmaris longus

• flexion of wrist and hand

flexor carpi ulnaris

• flexion of wrist and hand

quadriceps femoris

sartorius

• flexion and outward rotation

adductor longus

• adduction

• flexion

must know

gluteus maximus

• extension

• lateral rotation

semitendinosus

• extension

semimembranosus

• extension

biceps femoris

• extension

hamstrings are (blank) to the quadriceps

posterior

• rectus femoris

• extension

vastus lateralis

• extension

vastus medialis

• extension

gastrocnemius

• flexion

tibialis anterior

• dorsiflexion

fibularis longus

• eversion

soleus

• plantar flexion