Which statement concerning the AV node is correct?

Question

Quizplus · Accepted Answer

The AV node is not the normal pacemaker of the heart (A), as it only acts as a backup pacemaker if the SA node fails. While it does serve as the electrical connection between the atria and ventricles, it does not rapidly conduct the impulse; instead, it slows down the impulse to allow for atrial contraction before ventricular contraction (C). The AV node is innervated by the vagus nerve, so D is also incorrect. Therefore, the only correct statement is B.

Which Statement Concerning the AV Node Is Correct