Which of the Following Is True of Sodium and Potassium

Multiple Choice

Which of the following is true of sodium and potassium conductances in neurons?

A) They both increase with an increase in the membrane potential.
B) They both decrease with an increase in the membrane potential.
C) Sodium conductance increases, while potassium conductance decreases, with an increase in the membrane potential.
D) Sodium conductance decreases, while potassium conductance increases, with an increase in the membrane potential.
E) None of these describe the relationship between ion conductance and membrane potential.