This will be a primitive attempt, but I'll try to get the gist of it. A
membrane potential is a voltage across the membrane created by the
distribution of ions. This is a form of potential energy, since the
uneven distribution of charges "want" to move across the membrane and
balance out. This force drives the ion flux when ion channels are
>> I know that a difference in charge between intracellular and
> extracellular is responsible for the membrane potential.
> But I just can't grasp the idea of a potential, the only thing that
> you can measure is a difference.
> As I understand correctly the membrane potential is the force
> experienced by a charged particle that's within this electric field.
> Can please someone give a better definition