purkinje fibers

 

AV bundle branches from the purkinje fibers, penetrate into the Heart apex, and turn superiorly into the ventricular walls.

Left ventricular is much larger than right ventricles, the Purkinje network is more extensive in left side of the Heart.

AV bundle, bundle branches and purkinje fibers convey electrical impulse from AV node to apex of myocardium, where wave of ventricular contraction begins, pumping blood into pulmonary artery and Aorta.