Identify the Muscles & The Action They Perform

Temporalis

Function: closes jaw

Occipitofrontalis

Function: draws scalp back; raises eyebrows & wrinkles forehead

Procerus

Function: draws down medial angle of eyebrow

Corregator supercilli

Function: draws eyebrows in medially

Orbicularis Oculi

Function: closes eyelid

Nasalis

Function: opens nasal aperture

Orbicularis Oris

Function: closes lips

Buccinator

Function: compresses cheeks

Levator labii

Function: elevates upper lip

Masseter

Function: closes jaw

Zygomaticus

Function: draws angle of mouth upward & backward

Depressor anguli oris

Function: creates frowning motion

Depressor labii inferioris

Function: pulls mouth down

sternocleidomastoid

Function: rotate head in same plane

Trapezius

Function: extends head backward

Splenius capitis

Function: rotation of head

Pectoralis Major

Function: abduction of arm; medial rotation of arm; flexion of arm

Serratus anterior

Function: pulls & rotates scapula foward

Rectus abdominis

Function: flexes waist

External Oblique

Function: compresses abdomen

Brachialis

Function: flexes forearm

Coracobrachialis

Function: flexes & abducts arm

Biceps brachii

Function: flexes & supinates arm

Deltoid

Function: abducts arm

Triceps brachii

Function: extend forearm at elbow

Brachiordialis

Function: flexes forearm

Flexor digitorum superficialis

Function: flexes middle & proximal phalanges of four fingers & hand at the wrist

Flexor carpi radialis

Function: flexes hand at wrist

Palmaris Longus

Function: flexes hand at wrist

Flexor Carpi Ulnaris

Function: flexes hand; abducts hand

Pronator teres

Function: pronates & flexes hand at wrist

Extensor carpi radialis longus

Function: extends hand; radially abducts

Extensor carpi radialis brevis

Function: extends hand; radially abducts

Aconeus

Function: extends forearm

Extensor digitorum

Function: extends little finger

Extensor carpi ulnaris

Function: extends and abducts hand