Heart attack occurs due to : (1) Bacterial attack on the heart (2) Stopping of heart beat (3) Lack of blood supply to the heart itself (4) Impairment of heart’s working due to unknown reasons

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Answer :

(3) Lack of blood supply to the heart itself Explanation: 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.

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Last Answer : (3) Lack of supply of blood to the heart itself Explanation: A heart attack occurs when blood flow to a part of your heart is blocked for a long enough time that part of the heart, muscle is damaged ... to the heart. If the blood flow is blocked, the heart is starved of oxygen and heart cells die.

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Last Answer :  Lack of blood supply to the heart itself

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