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Pectoralis Major
Origin: Medial half of the clavicle, the sternum, the upper six ribs
Insertion: Greater tubercle of the humerus
Latissimus dorsi
Origin: The lower six thoracic and the lumbar vertebrae, the sacrum, and the posterior iliac crest
Insertion: The medial intertubercular groove of the humerus
Deltoid
Origin: Lateral third of the clavicle the acromion process, and the spine of the scapula
Insertion: Deltoid tuberosity of the humerus
Supraspinatus
Origin: Supraspinatus fossa of the scapula
Insertion: Greater tubercle of the humerus
Infraspinatus
Origin: Infraspinatus fossa of the scapula
Insertion: Greater tubercle of the humerus
Subscapularis
Origin: Subscapular fossa of the scapula
Insertion: Lesser tubercle of the humerus
Teres Minor
Origin: Lateral border of the scapula
Insertion: Greater tubercle of the humerus
Trapezius
Origin: Occipital bone, the seventh cervical and all the thoracic vertebrae
Insertion: Lateral third of the clavicle, the acromion process, and the spine of the scapula
Serratus anterior
Origin: Outer surface of the first nine ribs
Insertion: Entire length of the ventral surface of the vertebral border of the scapula