Question

Fill in the blanks.

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

Answer 1

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.