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As the Impulse from the SA Node Spreads Across the Atria

Question 47

Multiple Choice

As the impulse from the SA node spreads across the atria, it is prevented from stimulating the ventricles

A) SA node.
B) AV node.
C) tricuspid and bicuspid valves.
D) semilunar valves.
E) by the fibrous cardiac skeleton.

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