PR interval in ECG denotes ?
Ans. is 'c' i.e., Atrial contractionPR interval represents atrial depolarization (atrial contraction) and condution throught AV nudeElectrocardiogram Normal ECG in a bipolar limb leads typically shows five waves named P, Q, R, S and T. Q, R and S waves are collectively called QRS complex.
Isovolumetric contraction of ventricle
Insovolumetric relaxation of hea
Atrial contraction
None