EEOB 2520 Lecture Notes - Lecture 14: Resting Potential, Action Potential, Electric Charge
29 Apr 2016
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Electrical charge separation across pm due to distributions of charged components: ex: most cells are negative on inside. Net g = conc g + elec g. We are adding up the concentration gradient and electrical gradients! Difference in electrical charge between the inside and outside of the cell. Take the two sides and putting them together into one number (combine them) = vm. Don"t have to be a big electrical difference, just that there is a measurable difference that we can alter and have that be what we respond to if we see a difference, we know things will happen. Vm is the number for membrane potential it is the number for the total charge separation across the membrane due to the distributions of charged components. Equilibrium potential point at which concentration and electrical gradients for a particular ion are balanced. Any diffusion due to concentration difference is counterbalanced by diffusion due to electrical difference.
