Trace the order of electrical excitation of the heart
A) None of the listed responses is correct.
B) AV node, SA node, AV bundle, bundle branches
C) SA node, AV bundle, AV node, bundle branches
D) SA node, AV node, AV bundle, bundle branches
D
Explanation:
A) One of the listed responses is correct.
B) Excitation of the AV node is after the SA node.
C) The excitation of the bundle of His is after the AV node.
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