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Question

Coronary heart disease is due to

A
Streptococci bacteria
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B
Inflammation of pericardium
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C
Weakening of the heart valves
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D
Insufficient blood supply to the heart muscles
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Solution

The correct option is B Insufficient blood supply to the heart muscles
Coronary heart disease is a disease in which a waxy substance plaque builds up inside the coronary arteries. These arteries supply oxygen-rich blood to the heart muscle. Because of the plaque, these arteries can not supply sufficient blood to the heart muscles.
Therefore, the correct answer is option D.

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