Heart attack occurs due to : A)Bacterial attack on the heart B)Stopping of heart beat C)Lack of blood supply to the heart itself D)Impairment of heart’s working due to unknown reasons
Option C) A heart attack occurs if the flow of oxygen-rich blood to a section of heart muscle suddenly becomes blocked. If blood flow isn’t restored quickly, the section of heart muscle begins to die. Heart attacks most often occur as a result of coronary heart disease (CHD), also called coronary artery disease. CHD is a condition in which a waxy substance called plaque (plak) builds up inside the coronary arteries. These arteries supply oxygen-rich blood to the heart.
