Which of the following is the correct sequence for normal electrical impulse movement through the cardiac conduction system?
a. Vena cavae, right atrium, right ventricle, pulmonary artery
b. SA node, AV node, bundle of His, Purkinje fibers
c. Pulmonary veins, left atrium, left ventricle, aorta
d. Purkinje fibers, AV node, bundle of His, SA node
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