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| Q. |
The cause of Heart attack is: |
| A. | bacteria |
| B. | virus |
| C. | lack of blood supply to the heart |
| D. | impairment of heart's working due to unknown reason |
| Answer» C. lack of blood supply to the heart | |
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Explanation: Heart attack is the death of a segment of heart muscle caused by the loss of blood supply. It occurs when the blood flow that brings oxygen to the heart muscle is severely reduced or cut off completely. The blood supply is usually lost because a coronary artery, one that supplies blood to the heart muscle, is blocked by a blood clot (coronary thrombosis). |
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