If the SA node becomes damaged and nonfunctional, which of these is the most likely to occur?
a. The heart will stop.
b. The ventricles will contract, but the atria will stop.
c. Another part of the heart, possibly the AV node, will become the pacemaker.
d. The heart will beat faster.
e. The atria will keep contracting, but the ventricles will stop.
Answer: C