BOW 8

So the action potential is done by the neuron and when it gets excited the membrane voltage slowly rises. Once it reaches 40 mV it goes down quickly. It reaches 40 m V in 1.33 millaseconds. Then when it drops it goes to -60 in  3.8 milaseconds. THen finally stays there  for the rest of the time. THe membrane current is scattered. The green line reaching 800 is the one that goes up the highest and that is K+. THe lowest is -800 which is  the red line Na+ and the blue line Cl- is in the middle of the red and green.
The cardiac potential is in the myocite and is normally slower. It reaches 20 mV at 41.5 ms, so it takes a lot more time., but it never gets to 40 mV like the action potential. It was finished being excited at 400 ms. The red line (Na+) for its membrane current stayed at 0 for most of the time. The green line (K+) is  at 400 while the blue line [Ca]++ is at -600.