Muscle Action Flashcards
levator scapulae
scapular elevation and inferior (downward) rotation
rhomboid minor and major
scapular elevation, inferior (downward) rotation, and retraction
serratus anterior
scapular superior rotation and stabilization
infraspinatus
adducts, laterally rotates, and stabilizes GH joint
supraspinatus
abducts and stabilizes GH joint
subscapularis
medially rotates and stabilizes GH joint
teres major
GH extension, adduction, and medial rotation
latissimus dorsi
GH extension, adduction, and medial rotation
pectoralis major
GH flexion, adduction, and medial rotation
pectoralis minor
scapular protraction and depression
coracobrachialis
GH adduction and flexion
long head of biceps brachii
GH flexion
short head of biceps brachii
elbow flexion and supination
brachialis
elbow flexion
pronator teres
forearm pronation
flexor carpi radialis
wrist flexion, hand abduction
palmaris longus
weak wrist flexion
flexor pollicis longus
flexes MP and IP joint of thumb
flexor digitorum superficialis
flexes wrist, 2nd-5th MP joints, and PIP joints
lateral half of flexor digitorum profundus
flexes wrist, 2nd-5th MP joints, PIP, and DIP joints
pronator quadratus
pronates forearm
lateral 2 lumbricals
flexes 2nd-5th MP joints, extends 2nd-5th PIP and DIP joints
opponens pollicis
opposes thumb
abductor pollicis brevis
abducts thumb
flexor pollicis brevis
flexes thumb
flexor carpi ulnaris
flexes wrist and adducts hand
medial half of flexor digitorum profundus
flexes wrist, 2nd-5th MP joints, PIP, and DIP joints
adductor pollicis
adducts thumb
dorsal interossei
abducts fingers 2-5
palmar interossei
adducts fingers 2-5
medial 2 lumbricals
flexes 2nd-5th MP joints, extends 2nd-5th PIP and DIP joints
opponens digiti minimi
opposition of finger 5
abductor digiti minimi
abducts finger 5
flexor digiti minimi brevis
flexes finger 5
anterior deltoid
GH flexion and lateral rotation
middle deltoid
GH abduction
posterior deltoid
GH extension and lateral rotation
teres minor
adducts, laterally rotates, and stabilizes GH joint
triceps brachii
primary extensor of elbow
long head of triceps brachii
extends GH joint