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Muscles and Actions
Muscles of back and arm
muscle | action |
---|---|
Upper Traps | elevation |
Middle Traps | retraction |
Lower Traps | depression |
Rhomboideus | retraction |
Levator Scapulae | elevation |
Pect Mn | protraction, depression |
Serratus Anterior | scapular protraction |
Supraspinatus | abduction |
Infraspinatus | lateral rotation |
Teres Mn | lateral rotation |
Subscapularis | medial rotation |
Anterior Deltoid | flexion, medial rotation |
Middle Deltoid | abduction |
Posterior Deltoid | extension, lateral rotation |
Pect Mj | adduction, medial rotation |
subclavius | protraction, depression of clavicle |
Latissimus Dorsi | medial rotation, adduction, extension of arm |
Teres Mj | Medial rotation, adduction, extension of arm |
Coracobrachialis | flexion and adduction of arm |
Biceps Brachii | flexion of elbow, supination, flexion of shoulder |
Brachialis | flexion of elbow |
brachioradialis | flexion of elbow |
Pronator Teres | pronation |
Supinator | supination |
Pronator quadratus | pronation |
Triceps Brachii | extension of elbow, extends shoulder joint |
Anconeus | extension of elbow |