Heart conducting system contains Sino-atrial node, Atrio-ventricular node, AV-bundle and Purkinje fibres.
- SA node is situated in the upper lateral wall of the right atrium.
- AV node is located in the posterior part of the interatrial septum.
- The AV bundle branches into two and enter left and right ventricles.
- Purkinje fibres are located throughout the ventricular wall.