Why Av Node Is Called Pacesetter?

The atrioventricular node relays and intensifies the cardiac impulses. AV is known as pacesetter because it serves as an electrical relay station,slowing the electrical current sent by the sinoatrial node before the signal is permitted to pass down to the ventricle.

Why is AVN called Pacesetter?

AV node is called the pace setter. Here, the impulses are delayed for 0.1 second to ensure that the auricles will contract first and empty fully before the ventricles contract.

What is pacesetter in heart?

The atrioventricular node regulates the rhythm of the heart rate mainly. The delay in conduction of impulse in this node changes the duration of contraction between the atria and the ventricles. Hence, AV node is called as the pace-setter.