<P> During the ventricular contraction portion of the cardiac cycle , the Purkinje fibers carry the contraction impulse from both the left and right bundle branch to the myocardium of the ventricles . This causes the muscle tissue of the ventricles to contract and generate force to eject blood out of the heart , either to the pulmonary circulation from the right ventricle or to the systemic circulation from the left ventricle . </P>
the purkinje fibers are responsible for sending the electrical impulse into which area of the heart
the myocardium of the ventricles