Atrial depolarization causes the _________.
A) P wave
B) QRS complex
C) T wave
D) first heart sound
E) quiescent period

Question

Quizplus · Accepted Answer

Atrial depolarization corresponds to the contraction of the atria, and this electrical activity is represented on an electrocardiogram (ECG) by the P wave. The QRS complex represents ventricular depolarization and the T wave represents ventricular repolarization. The first heart sound corresponds to the closure of the atrioventricular valves and does not directly relate to electrical activity. The quiescent period refers to the period of no electrical activity between cardiac cycles.

Atrial Depolarization Causes the _________