The cardiac impulse,which causes the heartbea | vedclass

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(B) The cardiac impulse originates at the $SA$ node (Sinoatrial node),which acts as the natural pacemaker of the heart.From the $SA$ node,the impulse

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$AV$ node

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(B) The cardiac impulse originates at the $SA$ node (Sinoatrial node),which acts as the natural pacemaker of the heart.From the $SA$ node,the impulse travels through the internodal pathways to the $AV$ node (Atrioventricular node).The $AV$ node is located in the lower left corner of the right atrium near the interatrial septum.At the $AV$ node,the cardiac impulse is delayed for approximately $0.1$ seconds.This delay is crucial because it allows the atria to complete their contraction and empty their blood into the ventricles before the ventricles begin to contract.

Column-$I$	Column-$II$
$(a)$ Tricuspid valve	$(i)$ Between left atrium and left ventricle
$(b)$ Bicuspid valve	$(ii)$ Between right ventricle and pulmonary artery
$(c)$ Semilunar valve	$(iii)$ Between right atrium and right ventricle

The cardiac impulse,which causes the heartbeat,is delayed in which of the following?

Similar Questions

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