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