The impulse created by the natural pacemaker of the heart travels
A) across both atria at the apex of the heart to the atrioventricular septum, through the interventricular septum to the base of the heart, and back to the apex of the heart.
B) across both atria at the base of the heart to the atrioventricular septum, through the interventricular septum to the apex of the heart, and back to the base of the heart.
C) across both ventricles at the apex of the heart to the interventricular septum, through the atrioventricular septum to the base of the heart, and back to the apex of the heart.
D) across both ventricles at the base of the heart to the interventricular septum, through the atrioventricular septum to the apex of the heart, and back to the base of the heart.
Correct Answer:
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