Which wave on the electrocardiogram (ECG) results from the firing of the sinoatrial (SA) node?
A) QRS
B) T
C) P
D) S-T

Question

Quizplus · Accepted Answer

The P wave on the ECG results from the firing of the SA node, which initiates atrial depolarization. The QRS complex represents ventricular depolarization, and the T wave represents ventricular repolarization. The S-T segment represents the plateau phase of ventricular depolarization.

Which Wave on the Electrocardiogram (ECG) Results from the Firing