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muscle actions pt1

frontalis raise eyebrows
orbicularis oris kissing, puckers lips
orbicularis oculi blinking eye, winking
buccinator fishy face, whistling
zygomaticus smiling muscle, draws up the corners of mouth
platysma pouting, chewing
masseter elevates mandible, prime jaw mover
temporalis elevates mandible, synergist to masseter
medial pterygoid elevates mandible, moves jaw side to side
lateral pterygoid depresses mandible, moves it side to side, protracts mandible
sternocleidomastoid flexes head, rotates head, elevates sternum during deep inhalation
splenius capitis and semispinalis capitis rotates and extends head, moves head side to side
erector spinae extends the vertebral column
trapezius elevates, depresses, and adducts the scapula
rhomboideus major elevates and adducts the scapula
levator scapulae elevates scapula
serratus anterior depresses scapula and pulls it anteriorly
pectoralis minor synergizes with serratus anterior and help elevate ribs during inhalation
teres major extends, adducts, and rotates arm medially
latissimus dorsi extends, adducts, and rotates arm medially
supraspinatus abducts arm
deltoid extends, flexes, and abducts arm
subscapularis rotates arm medially
infraspinatus rotates arm laterally
teres minor rotates arm laterally
biceps brachii flexes forearm, rotates lower arm laterally
brachialis flexes forearm, lies under the biceps brachii
brachioradialis flexes forearm
triceps brachii extends forearm
supinator turns forearm laterally
pronator teres turns forearm medially
flexor carpi radialis flexes and abducts wrist
flexor carpi ulnaris flexes and adducts wrist
palmaris longus flexes at the wrist only
flexor digitorum superficialis flexes fingers
extensor carpi radialis longus (and brevis) extends and abducts wrist
extensor carpi ulnaris extendsand adducts wrist
extensor digitorum extends fingers
Created by: cdeberry