Multiple choice

Which of the following is known as the pacemaker of heart?

  1. Sinu auricular node

  2. Atrio ventricular node

  3. Sino ventricular node

  4. Ventriculo atrial node

  5. -
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A Correct answer
Explanation

SA node is the heart's natural pacemaker. In the upper part of the right atrium of the heart, there is a specialised bundle of neurons known as the sinoatrial node (SA node).

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