The plateau phase of an action potential in cardiac muscle cells is due to the . efflux of K through K channels influx of Ca2 through slow Ca2 channels influx of Na through fast Na channels efflux of Ca2 through fast Ca2 channels

he would use the colour black

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.