Myocardial infarction (MI), more commonly referred to as a heart attack, occurs when the buildup of plaque in the coronary arteries blocks blood flow to a part of the heart muscle, depriving it of nutrients and causing cells to die off. In the United States, someone suffers heart attack every 34 seconds, which adds up to over 1 million people a year. Do you know how to prevent this traumatic occurrence? Furthermore, would you even know if you were having a heart attack? Take this quiz to learn what you need to know!