Question

what causes the p wave on an ecg? multiple choice depolarization of ventricular myocardium repolarization of atrial myocardium depolarization of atrial myocardium repolarization of ventricular myocardium

Explanation:

The P - wave on an ECG represents the depolarization of the atrial myocardium. Depolarization is the electrical activation of the muscle cells. Ventricular myocardium depolarization is represented by the QRS complex. Repolarization of atrial or ventricular myocardium is not what the P - wave represents.

Answer:

C. Depolarization of atrial myocardium