Cardiovascular Disease and Aging

552 Words3 Pages
The function of the heart is to pump blood, rich in oxygen, throughout the entire body. Deoxygenated blood enters the right atrium through two veins called the superior and inferior vena cava. As the right atrium contracts, blood is pumped through the tricuspid valve to the right ventricle. When the right ventricle becomes full the tricuspid valve will close and deoxygenated blood will be pumped from the right ventricle through the pulmonary valve to the pulmonary artery, then to the lungs to become oxygenated. Once the blood is pumped through the lungs, it enters back into the heart through the pulmonary vein and into the left atrium. The blood is now oxygenated. The left atrium pumps blood through the mitral valve into the left ventricle. The left ventricle is the strongest and most important chamber of the heart. Like the tricuspid valve, the mitral valve will close when the left ventricle becomes full. From here the blood is pumped through the aortic valve and out the aorta to the rest of the body. As the body ages, functions are at risk of becoming impaired and struc...
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