Equilibrium Potential and RMP
The Neuron - correct answer Is compartmentalized
Dendrite and soma are responsible for receiving the input signals
Axons are responsible for sending out the signals to the terminals
Uphill vs. Downhill gradient - correct answer Uphill= active, consumes body's
energy ATP
Downhill= passive, does not consume body's energy (no ATP used)
Equilibrium potential - correct answer When electrical force (diffusion potential)
increases to the point that it exactly balances or opposes the chemical force
(tendency for ion to go down its concentration gradiant)
Has 2 forces acting on it
Chemical force= the concentration of the ion
Electrical force= the charge of the ion
These forces, once the become equal, will act to repel each other so that no more
net flow of the ion will cross a semi-permeable membrane
Electrochemical equilibrium - correct answer Chemical and electrical driving forces
acting on an ion are equal and opposite and there is not further net diffusion of the
ion
Nernst Equation - correct answer Describes the equilibrium potential for any ion
species
E= RT/zF x ln [C]o/[C]i
E=61/z X Log[C]o/[C]i
