Actions

trapezius/levator scapulae/rhomboid minor & miagor - elevates scapula

latissimus dorsi - medially rotates arm

erector spinae & quadratus lumbormum - laterally flexes vertebral column

posterior scalene - elevates 2nd rib during inhalation

anterior & middle scalene - elevates 1st rib during inhaltion

splenius cervicis & capitits - extends neck & turns head to sameside

sternocleidomastoid - lateral fexion, rotation of head to opposite side, flexes neck

medial rectus - adducts eye

lateral rectus - abducts eye

inferior rectus - depresses & adducts eyes

superior rectus - elevates & adducts eyes

inferior oblique - elevates & abducts eyes

superior oblique - depresses & abducts eyes

levator palpebrae superioris - elveates upper eyelid

medial/lateral pterygoid masseter, & temporalis - mastication

diaphram - expands throacic cavity

tranversus throacics/internal costalas - depresses ribs

external intercostals/ serratus posterior superior - elevates ribs during inhalation

zygomaticus minor/major - elveates corner of mouth

risorius - retracts corners of mouth

platysma - pulls lower lip inferiorly

perctorialis major/deltoid- medially rotates arm

pectoralis minor/serratus anterior/ subscapularis - protacts scapila

orbicularis oculi - closes eye

occipitalis - retracts scalp

mentalis - elevates and protudes lower lips

levator labii superioris - open lips

depressor labii inferiors - depresses corner of mouth

depressor anguli oris - depresses corner of the mouth

frontalis - elevates eyebrows

buccinator - compresses cheek

teres minor/major , infraspiantus, coracoibrachialis, triceps brachii - adducts arm

supraspinatus - abducts arm

brachialis/triceps brachii, brachioradialis - flexes forearm

anconeus - extends forearm

pronator teres/quadratus - pronates forearm

flexor carpi radialis/ulnaris, digitorum profundis, pollicis longus, palmaris longus - flexes hand at wrist

extensor carpi radialis brevis/longus, digitorum , ulnaris, pollicis brevis/longus - extends hand

supinator - supinates forearm

abductor pollicis longus - abducts thumb