The AV nodal delay ensures that:
A)The atria contract and empty their contents into the ventricles prior to ventricular systole.
B)The ventricles contract prior to atrial systole.
C)Tetanic contractions of cardiac muscle are impossible.
D)Ventricular diastole occurs before systole.
E)Atrial diastole occurs before atrial systole.

Question

Quizplus · Accepted Answer

The AV nodal delay allows time for the atria to contract and empty their contents into the ventricles before ventricular systole begins.

Answer: D 
 The AV nodal delay does not affect the timing of ventricular diastole or atrial systole, so options B, C, and E are incorrect.

The AV Nodal Delay Ensures That