Question

Where on ECG the actual atrial systole and ventricular diastole

would occur?
A. Atrial Systole ( from where to where on the ECG)
B. Ventricular Systole ( from where to where on the ECG)

Answer 1

Atrial systole occurs during the P wave on an ECG, ending just before the QRS complex. The QRS complex marks the start of ventricular systole. Ventricular diastole begins after the T wave when the ventricles are filling with blood.

Step-by-step explanation:

On an ECG (Electrocardiogram), atrial systole occurs during the P wave, which represents the depolarization of the atria and is followed by the contraction of the atrial muscles. This phase ends just before the QRS complex, which marks the beginning of ventricular systole. Ventricular diastole corresponds to the period after the T wave, where the ventricles are in relaxation and filling up with blood from the atria. Atrial systole and the beginning of ventricular systole are sequential events in the cardiac cycle with the atria contracting to complete filling of the ventricles, followed by the contraction of the ventricles to pump blood out of the heart.