Are these images the action potential of an atrial or ventri

Are these images the action potential of an atrial or ventricular muscle cell? explain you answer.

What is the difference between a wave, a segment and an interval

Solution

The images are of a ventricular muscle cell.This is because the plateau phase is releatively constant which means the membrane potential is relatively constant due to very slow repolarisation process.Had it been atrial action potential, the plateau phase would have been narrow due to small influx of calcium ions and rapid repolarisation period.So we can confirm that it is an action potential of ventricular muscle cell.

A wave can be defined as a upward or downward deflection seen in the ECG that corresponds to the various stages of action potential of atrial and ventricular cells.whereas an isoelectric line that connects two waves not including either one of them is known as a segment whereas an interval is that portion of the ECG that includes a segment along with one or more waves.