Question

what is the composition of AVN(aterio ventricular node) and SAN(sinuatrial node)

Answer 1

The AV node is labelled 2. The atrioventricular node, or AV node is a part of the electrical conduction system of the heart that coordinates the top of the heart. It electrically connects the atria and ventricles.

Answer 2

Medical Definition of SA node. ... The SA node is also called the sinus node. 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.