PECTORALIS MAJOR – Origin, Insertion, Nerve supply, Action

CLASSIFICATION : Muscles Of The Pectoral Region & Axilla

ORIGIN : Medial half of clavicle; manubrium & body of sternum; upper six costal cartilages

INSERTION : Lateral lip of intertubercular groove of numerus

NERVE : Lateral & medical Pectoral nerve

ACTION : Flexes, adducts and medially rotates arm

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