Muscles of the Shoulder

Elevators of the ST joint

• upper traps

• Levator scap

• Rhomboids

Depressors of the ST joint

• Lower traps

• Lats

• Pec minor

• Subclavius

Protractors of the ST joint

Serratus anterior

Retractors of the ST joint

• Middle traps

• Rhomboids

• Lower Traps

Upward Rotators of the ST joint

• Serratus anterior

• Upper and lower traps

Downward Rotators of the ST joint

• Rhomboids

• Pec minor

Muscles in ABD and FLEX of GH joint

• Anterior and middle delts

• coracobrachialis

• biceps long head

• ALL rotator cuff

Muscles in ABD and FLEX of ST joint

• Serratus Anterior

• Traps

Muscles in ADD and EXT of GH joint

• posterior deltoid

• lats

• teres major

• triceps long head

• sternocostal head of pec major

Muscles in Ext Rot of GH joint

• infraspinatus

• teres minor

• posterior delts

Muscles in Int Rot of GH joint

• subscap

• anterior delts

• pec major

• lats

• teres major