<P> In a four - chambered heart , such as that in humans , there are two ventricles that operate in a double circulatory system : the right ventricle pumps blood into the pulmonary circulation to the lungs , and the left ventricle pumps blood into the systemic circulation through the aorta . </P>
what is the primary role of the left ventricle of the heart
pumps blood into the systemic circulation through the aorta