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Heart attack occurs due to :
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- Bacterial attack on the heart
- Stopping of heart beat
- Lack of blood supply to the heart itself
- Impairment of heart’s working due to unknown reasons
Correct 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.
