Action potentials are relayed from the lower part of the atrium (AV node) through the Bundle of His to the lower part of the venticle. This serves to:

A) ensure that the entire heart is stimulated simultaneously.
B) excite the venticles before the atria.
C) ensure adequate separation of atrial and ventricular contraction, producing a wavelike contraction.


Answer: B) excite the venticles before the atria.

Anatomy & Physiology

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