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Pectoralis Major
Origin- Ribs, Sternum, And Clavicle
Insertion - Greater tubercle
Action- Flexion of shoulder
Medial rotation of shoulder
Adduction of shoulder
Latissimus Dorsi
Origin - Iliac Crest
Insertion - Intertubercular Groove
Action - Extension of Shoulder
Medial Rotation OG Shoulder
Teres Major
Origin- Lateral border of scapula
Action- Extension of Shoulder
Teres Minor
Origin- Lateral Border of Scapula
Insertion - Greater Tubercle
Action - Lateral Rotation of Shoulder
Infraspinatus
Origin- Infraspinous Fossa
Action - Lateral rotation of shoulder
Supraspinatus
Origin - Supraspinous Fossa
Action - Abduction of Shoulder
Subscapularis
Origin - Subscapular Fossa
Insertion - Lesser Tubercle
Action - Medial rotation of shoulder
Deltoid
Origin - Spine of Scapula, acromion process, and clavicle
Insertion - Deltoid tuberosity
Action - All actions of shoulder EXCEPT Adduction of shoulder
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