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Unformatted text preview: ++ channels open, which way do the Ca ++ ions flow? into the cell E ion = 2.3 RT log [ion] o z F [ion] i 3. a. If you change the intracellular concentration of K + to 40 mM, what would the equilibrium potential for K + be? -58 mV b. How will this change in intracellular concentration of K + affect the E Na+ and E Cl ? No effect 4. You now record an action potential in this neuron. a. If the action potential is due to an influx of Na + , what is the maximum value that the membrane potential could reach at the peak of the action potential (assuming the membrane is impermeable to all other ions)? +58 mV b. If you change the outside concentration of Na + to 13 mM, what is the membrane potential at the peak of the action potential? 0 mV...
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This note was uploaded on 12/06/2009 for the course BIO 172 taught by Professor Clark during the Winter '08 term at University of Michigan.
- Winter '08