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Question

Myocardial infarction is caused by 


A
Hardening of arteries
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B
Lumpy thickness developed in the inner walls of arteries
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C
Clot in the lumen of a coronary artery
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D
Sudden interruption in the blood flow towards a portion of the heart
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Solution

The correct option is D Sudden interruption in the blood flow towards a portion of the heart
Coronary arteries bring oxygen-rich blood to the hardworking heart muscle. The blockage of these arteries, as well as others in the body, most often arises from a condition known as atherosclerosis. With this disease, calcified fatty deposits build up to form so-called plaques in the inner lining of these arteries. Myocardial infarction (MI) or acute myocardial infarction (AMI), commonly known as a heart attack, occurs when blood flow stops to part of the heart causing damage to the heart muscle.
So, the correct answer is option D.

Biology

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