what is the primary role of the left ventricle of the heart
Ventricle (heart) 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.
Heart valve The mitral valve and the aortic valve are in the left heart; the tricuspid valve and the pulmonary valve are in the right heart.