If the atrioventricular node could be surgically removed from the heart without disrupting signal transmission to the Purkinje fibers, what would be the effect?
A)No apparent effect on heart activity would be observed.
B)The heart rate would be decreased.
C)Only the ventricles would contract.
D)Only the atria would contract.
E)Atria and ventricles would contract at about the same time.

Question

Quizplus · Accepted Answer

The atrioventricular node delays the signal from the atria to the ventricles, allowing the atria to contract before the ventricles. Without it, the atria and ventricles would contract almost simultaneously.

If the Atrioventricular Node Could Be Surgically Removed from the Heart