Question

why is sino atrio node pace maker?

Answer 1

The SA node is the heart's natural pacemaker. ... The electrical signal generated by the SA node moves from cell to cell down through the heart until it reaches the atrioventricular node (AV node), a cluster of cells situated in the center of the heart between the atria and ventricles.

Answer 2

❀ $\large{ \underline\textbf{Answer - }}$


The sino-atrial node (SA node) is the pacemaker in a normal heart.