sternocleidomastoid		extends humerus or adducts and rotates arm medially
trapezius		extends and adducts arm and rotates humerus inwardly, or pulls shoulder downward and posteriorly
rhomboid major		rotates scapula and raises arm, pulls scapula and shoulder downward
levator scapulae		pulls arm anteriorly and across chest, rotates humerus, adducts arm
pectoralis minor		pulls head to side, pulls head toward chest, or raises sternum
pectoralis major		elevates scapula
teres major		rotates arm laterally
latissimus dorsi		pulls scapula anteriorly and downward or raises ribs
deltoid		raises and adducts scapula
subscapularis		rotates arm medially
infraspinatus		abducts arm, extends or flexes humerus