In what order would excitation move through the conducting system of the heart?
1)Purkinje fibers 4.SA node
2)AV bundle 5.bundle branches
3)AV node
A)4,3,2,5,1
B)3,5,4,2,1
C)1,4,3,2,5
D)4,2,3,5,1
E)3,2,4,5,1

Question

Quizplus · Accepted Answer

The correct order of excitation through the conducting system of the heart is as follows: SA node → AV node → AV bundle → bundle branches → Purkinje fibers. Therefore, the correct sequence is 4, 3, 2, 5, 1. Choice A is the only one that matches this sequence.

In What Order Would Excitation Move Through the Conducting System