500
Describe the flow of blood through the heart
Blood enters the superior/inferior vena cava, enters right atrium, passes through tricuspid valve, enters right ventricle, passes through left pulmonary artery, gets oxygenated in the lungs, passes through the left pulmonary veins, enters left atrium, passes through the bicuspid valve, enters the left ventricle, passes through the aortic valve, enters the aorta, is distributed through the body