Multiple Choice
If the AV node is damaged so that it can no longer transmit the signal from the SA node (total heart block) , will the ventricles continue to contract? Why or why not?
A) No: there are no cells left to pace and coordinate the heart beat.
B) Yes: the AV bundle will keep the heart going at the usual rate.
C) Yes: however, ventricular contractions will no longer follow atrial contractions, and the rate of ventricular contractions will be significantly slowed.
D) No: the SA node must be intact to pace the system.
Correct Answer:
Verified
Correct Answer:
Verified
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