What is the natural pacemaker of the heart?, SA Node, AV Node, Bundle of His, Purkinje fibers, Arrange the pathway of electrical conduction in the correct sequence: 1.AV node 2.SA node 3.Purkinje fibers 4.Bundle of His, 4 → 2 → 1 → 3, 2 → 1 → 4 → 3, Select True or False. The Purkinje fibers are responsible for rapidly transmitting impulses to the ventricles, causing them to contract., True, False, What would most likely happen if the AV node fails to conduct impulses from the SA node?, The ventricles will stop contracting completely, The Bundle of His will take over, causing a slower heart rate, The SA node will increase its firing to compensate, restoring normal rhythm, The Purkinje fibers will speed up conduction to maintain normal heart rate.

Pacemaker and Conduction System

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