Editing Cardiac pacemaker (section)

====Atrioventricular junction====
The atrioventricular node and the [[Bundle of His]], a little further down, are located in the region separating the atria from the ventricles known as the atrioventricular junction. The Bundle of His transmits signals to the [[bundle branches]], which send them on to the [[Purkinje fibers]]. These will also produce a spontaneous cardiac action potential at a rate of 30–40 beats per minute, so if the SA and AV node both fail to function, these cells can also become pacemakers but with a much lower rate of conduction than either the primary or secondary pacemakers.