The correct sequence of parts that carry cardiac impulses is
A. AV node, AV bundle, Purkinje fibers, SA node.
B. SA node, AV node, AV bundle, Purkinje fibers.
C. SA node, Purkinje fibers, AV node, AV bundle.
D. AV node, SA node, Purkinje fibers, AV bundle.
Answer: B
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