List I | List II |
A. P-wave | I. Ventricular repolarization-relaxation phase |
B. P-R interval | II. The onset of ventricular depolarization - leads to ventricular contraction |
C. QRS complex | III. Time for the impulse to be conducted from SA node to the ventricles through the AV node |
D. T-wave | IV. Atrial depolarization - leads to atrial contraction |
A. | RBCs are devoid of nucleus in most of the mammals and are biconvex in shape. |
B. | Lymph has the same mineral distribution as that in plasma. |
C. | By counting the number of QRS complexes in ECG that occur in a given time period, one can determine the heartbeat rate of an individual. |
D. | Heart is an endodermally derived organ. |