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Question

In man, artificial pacemaker is implanted due to defects in

A
SA node
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B
AV node
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C
Mitral valve
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D
Purkinje fibres
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Solution

The correct option is D SA node
SA node generates the impulse for contraction of the heart. It is called the natural pacemaker of the heart. When the SA node is not functioning properly, an artificial pacemaker needs to be implanted in its place to generate the impulse for the heartbeat.

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