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.
Watch how coronary artery disease develops, leading to potential artery blockage and myocardial infarction, or heart attack.
Learn what angina is, what causes it, and how to recognize the signs and symptoms of this serious condition.
