In an ECG pattern, the P wave is caused by
A)repolarization of atrial muscle fibers.
B)repolarization of ventricular muscle fibers.
C)depolarization of atrial muscle fibers.
D)depolarization of ventricular muscle fibers.

Question

Quizplus · Accepted Answer

The P wave is caused by depolarization of the atrial muscle fibers. This represents the electrical impulse that triggers the contraction of the atria, leading to the filling of the ventricles. Repolarization of atrial muscle fibers occurs during the QRS complex. Depolarization of ventricular muscle fibers is represented by the QRS complex, while repolarization is represented by the T wave.

In an ECG Pattern, the P Wave Is Caused by