IMMUNOLOGY

Detailed explanation-1: -A heart attack is also called a myocardial infarction (MI). It happens when one or more parts of the heart muscle don’t get enough oxygen. That occurs when blood flow to the heart muscle is blocked. If the blood and oxygen supply is cut off, muscle cells of the heart begin to suffer damage and start to die (infarct).

Detailed explanation-2: -Myocardial ischemia occurs when blood flow to your heart is reduced, preventing the heart muscle from receiving enough oxygen. The reduced blood flow is usually the result of a partial or complete blockage of your heart’s arteries (coronary arteries).

Detailed explanation-3: -A heart attack (medically known as a myocardial infarction) is a deadly medical emergency where your heart muscle begins to die because it isn’t getting enough blood flow. A blockage in the arteries that supply blood to your heart usually causes this.