The pace-setter in the heart is called

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Question

(D) The heart has a specialized conducting system. The $Sino-atrial$ $node$ $(SAN)$ is known as the pacemaker because it generates the maximum number

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Atrio-ventricular node $(AVN)$

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(D) The heart has a specialized conducting system. The $Sino-atrial$ $node$ $(SAN)$ is known as the pacemaker because it generates the maximum number of action potentials to initiate the heartbeat. The $Atrio-ventricular$ $node$ $(AVN)$ is known as the pace-setter because it delays the impulse of contraction before transmitting it to the ventricles,thereby regulating the time interval between the contraction of the atria and the ventricles.

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