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Question

Fill in the blanks.

(xvii) _______ node strengthens the signals generated by SA node.


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Solution

Nodes of the heart:

  1. There are two nodes present in the heart which help to run the cardiac cycle.
  2. Those two nodes are the Sino-Atrial node (SA node) and Atrio-Ventricular node (AV node).
  3. They both are present on the lower side of the right atrium.

AV node:

  1. The Atrio-Ventricular node (AV node) is also called the pacesetter due to its function.
  2. Because it strengthens the electrical impulses that are generated by the SA node (Sino-Atrial node) that stimulate contraction.

Atrio-Ventricular node strengthens the signals generated by SA node.


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