*Superior vena cava: Oxygen-poor blood from head + arms to right atrium
*Inferior vena cava: Oxygen-poor blood from torso + legs to right atrium
*Pulmonary artery: Oxygen-poor blood from heart to the lungs.
*Pulmonary veins: Oxygen-rich blood from lungs to left atrium
*Aorta: Pumps Oxygen-rich blood to rest of the body