Explanation:
Arrows show the path of blood flow in the human heart. The blood enters the heart from the body
through the superior vena cava and the inferior vena cava. Then the blood enters the right atrium
chamber of the heart. The blood then moves through the tricuspid valve (shown as two white flaps) into
the right ventricle chamber of the heart. Then the blood moves through the pulmonary valve (shown as
two white flaps) into the pulmonary artery (one on each side of the heart). The blood re-enters the heart
through the pulmonary veins (two on each side of the heart), and travels into the left atrium. The blood
then passes through the mitral valve (shown as two white flaps) and into the left ventricle chamber of the
heart. The blood then moves through the aortic valve
