Referring to the choices below,the normal flow of electrical impulse through the cardiac conduction system of the heart follows what sequence of events?
1)Purkinje fibers
2)AV node
3)SA node
4)Bundle of His
5)Interventricular node (IV node)
A)3,1,4,5
B)2,3,5,1
C)3,2,4,1
D)3,5,4,1

Question

Quizplus · Accepted Answer

The normal cardiac conduction sequence is as follows.The sinoatrial (SA)node initiates depolarization of the atrial muscle,and the impulse is slightly delayed as it travels to the atrioventricular (AV)node.The AV node delays and finally relays the impulse along the common bundle of His.The impulse continues along the common bundle of His and its branches until it finally reaches the Purkinje fibers,stimulating the ventricular muscular sheet.

Referring to the Choices Below,the Normal Flow of Electrical Impulse