Na Action Potential Tracings from Neurons In Action cross ha

Na Action Potential Tracings from Neurons In Action. cross hair x 0.825 y -36.4214 Close Hide 80 r Membrane Voltage vs Time ENa Hodgkin Hucley Channels 40 Stimu us Current -40 Hide Close 5 ms

Solution

The last phase of action potential is called hyperpolarizing after-potential. In this continued movement of K⁺ out of the cell brings causes membrane hyper-polarisation. During this time p_Na is at it\'s resting value, but p_k is higher than its resting value. The channels close because the membrane potential becomes more negative than threshold value. The conductance and permeability is proportional to the total number of open channels in the membrane. The membrane will not be permeable to sodium ion.