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Question -

What is the significance of atrio-ventricular node and atrio-ventricular bundle in the functioning of heart?



Answer -

The atrio-ventricular bundle (AV) originating from the AV-node passes the cardiac impulse to the walls of the ventricles whereas the atrio-ventricular node(AVN) conveys the impulse from the SA node. Both AVN and AV are triggered by the action potential that is originated by the sino-atrial node thereby conducting the stimulus to the other parts of the heart. This causes a heart beat which is conducted to various other parts of the heart.

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