PR interval in ECG denotes
Ans. (c) Atrial contractionRef: Ganong, 25th ed/p.525PR interval#From the onset of P wave to the beginning of QRS complex#Duration - 0.12 to 0.20 sec#Denotes atrial contraction and Atrioventricular (AV) conduction time
Isovolumetric contraction of ventricle
Insovolumetric relaxation of heart
Atrial contraction
None
Heart, Circulation, and Blood