Which of the following represents the time from the beginning of atrial contraction to the beginning of ventricular contraction?
A) QRS complex
B) PR interval
C) P wave
D) Q wave

Question

Quizplus · Accepted Answer

The PR interval is the time from the beginning of atrial contraction to the beginning of ventricular contraction. It contains the P wave (depolarization of the atria) and the spread of the electrical impulse through the AV node, bundle of His, right and left bundle branches, and Purkinje fibers. As the heart rate increases, the PR interval typically shortens.

Which of the Following Represents the Time from the Beginning