Impulse originating from the sino-atrial node | vedclass

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(A) The electrical impulse in the heart originates at the $S-A$ node (sino-atrial node),which acts as the natural pacemaker.From the $S-A$ node,the im

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Atrio-ventricular node

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(A) The electrical impulse in the heart originates at the $S-A$ node (sino-atrial node),which acts as the natural pacemaker.From the $S-A$ node,the impulse is transmitted to the $A-V$ node (atrio-ventricular node).Following this,the impulse travels through the Bundle of His and finally spreads through the Purkinje system to stimulate ventricular contraction.The sequence is: $S-A$ node $	o$ $A-V$ node $	o$ Bundle of His $	o$ Purkinje system.

Impulse originating from the sino-atrial node are transmitted to the

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