A heart murmur indicates a defective

Sinoatrial node.

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Atrioventricular node.

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Heart valve.

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Pulmonary artery or aorta.

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Solution

The correct option is C Heart valve.
Problematic heart murmurs are most often related to defective heart valves.
A heart valve may not open completely due to smaller opening. A heart valve may also not close completely which may lead to the leakage of blood backwards causing heart murmur.

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Similar questions

Choose the odd one out:

Mitral valve, Sino-atrial node, Aorta, Pulmonary vein

On which part of the human heart is the sinoatrial node located?

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