Tendons
Origin: Sternal half of the Clavicle, sternum to 7th rib, cartilages of true ribs, aponeurosis of external oblique
Insertion: Lateral lip of bicipital groove of the Humerus
Function: Adducts arm, extends arm, internal rotation of the shoulder along with other
Muscles which produce shoulder Adduction
Muscles which produce shoulder Extension
Muscles which produce shoulder Internal (medial) Rotation
Nerve: dual innervation by the Medial Pectoral Nerve and the Lateral Pectoral Nerve
Artery: Pectoral branch of Thoracoacromial artery and the Internal Mammary artery
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