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Question

The impulse of heart beat originates from ___


  1. Atrioventricular node

  2. Cardiac

  3. Vagus

  4. Sinoatrial node


Solution

The correct option is D

Sinoatrial node


The sinoatrial node consists of a cluster of cells that are situated in the upper part of the wall of the right atrium or the right upper chamber of the heart. The electrical impulses are generated there.

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