| atrium | receives blood |
| ventricle | pumps blood out of the heart |
| tricuspid valve | prevents blood from flowing back into the right atrium after it has entered the right ventricle |
| inferior vena cava | vein that brings oxygen poor blood from the lower part of the body to the right atrium |
| pulmonary valve | prevents blood from flowing back into the right ventricle after it has enter the pulmonary artery |
| aortic valve | prevents blood from flowing back into the let ventricle after it has entered the aorta |
| pulmonary arteries | brings oxygen-poor blood to the lungs |
| aorta | brings oxygen-rich blood from the left ventricle to the body |
| superior vena cava | large vein that brings oxygen-poor blood from the upper part of the body to the right atrium |
| pulmonary vein | brings oxygen rich blood from each lung to the left atrium |
| mitral valve | prevents blood from back flowing into the left atrium after it has entered the left ventricle |
| coronary artery | supplys the heart with blood |