Your heart is a pump that is responsible for delivering blood to all parts of your body. Arteries carry oxygen-rich blood from the lungs to nourish the cells, and veins transport oxygen-poor blood on its way back to the heart and lungs. This animation shows how the heart and circulatory system work.
Learn about what happens in your body when you have pericardial effusion, signs and symptoms of pericardial effusion, and what treatments are available.
