The electrical conduction of the heart usually originates in the SA node. Which of the following sequences completes the conduction?
A) SA node to Bundle of HIS to AV node to Purkinje fibers
B) SA node to AV node to Purkinje fibers to Bundle of HIS
C) SA node to bundle of HIS to Purkinje fibers to AV node
D) SA node to AV node to bundle of HIS to Purkinje fibers
Ans: D
Feedback: The normal conduction route is SA node to AV node to bundle of HIS to Purkinje fibers.
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