Which of the following is the correct sequence for the conduction system?
A. SA node>AV node>AV bundle and Purkinje fibers
B. AV node>SA node>AV bundle and Purkinje fibers
C. SA node>AV bundle and Purkinje fibers>AV node
D. AV bundle and Purkinje fibers>AV node>SA node
Answer: A
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