Your heart is a muscle that pumps blood throughout your body by relaxing and filling the chambers of
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How Your Heart Works - Animation
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.
Focus On: Pericarditis
Learn what happens in your body when you have pericarditis, what symptoms you might have, and what treatments you might receive.
What is a Heart Attack?
Your heart is responsible for pumping a constant supply of oxygen-rich blood to your organs and tissues. A heart attack occurs when the blood flow to your heart muscle is disrupted or stopped, usually because of heart disease.
Definition: Ventricular Septum
Watch this to learn what the ventricular septum is.
