Which of these statements correctly describes the AV nodal delay?
A)It ensures that the atria contract and empty their contents into the ventricles prior to ventricular systole.
B)It ensures that the ventricles contract prior to atrial systole.
C) It ensures that tetanic contraction of cardiac muscle is impossible.
D) It is shortened by parasympathetic stimulation.

Question

Quizplus · Accepted Answer

The AV nodal delay, which is the delay in the transmission of the electrical signal from the atria to the ventricles through the AV node, ensures that the atria contract and empty their contents into the ventricles prior to ventricular systole. This is essential for efficient pumping of blood through the heart.

Which of These Statements Correctly Describes the AV Nodal Delay