Relier Pairs CVS Heart: Cells & ECGVersion en ligne Pacemaker, Contractile cells & ECG par Dr MAHABOOB KHAN SULAIMAN 1 Contractile cells 2 Funny current 3 Pacemaker Cells 4 Auto-rhythmic 5 Atrial depolarization 6 Ventricular repolarization 7 Plateau phase 8 Ventricular depolarization 9 Non auto-rhythmic cells with long refractory period QRS wave called pacemaker potential, Ca 'T' type channels open P wave 1% of cells with no true resting potential characteristic of contractile cells, slow Ca channels open Contractile cells Pacemaker cells 99% cells with true resting potential T wave