What Effect Would a Chemical That Blocks Voltage-Gated Sodium Ion

Describe depolarization,repolarization,and hyperpolarization. A)Depolarization is a shift in membrane potential toward a more positive value; repolarization is the return of the membrane potential to resting; and hyperpolarization is a shift in membrane potential toward a more negative value. B)Depolarization is a shift in membrane potential toward a more negative value; repolarization is the return of the membrane potential to resting; and hyperpolarization is a shift in membrane potential toward a more positive value. C)Depolarization is the return of the membrane potential to resting; repolarization is a shift of the membrane potential toward a more positive value; and hyperpolarization is a shift in membrane potential toward a more negative value. D)Depolarization is the return of the membrane potential to resting; repolarization is a shift of the membrane potential toward a more negative value; and hyperpolarization is a shift in membrane potential toward a more positive value. E)Depolarization is a shift in membrane potential toward a more negative value; repolarization is a shift of the membrane potential toward a more negative value; and hyperpolarization is the return of the membrane potential to resting.

What factors account for the local currents associated with graded potentials? A)The movement of negative charges parallel to the inner surface of the cell. B)The movement of negative charges parallel to the outer surface of the cell. C)The movement of sodium ions parallel to the inner and outer surfaces of the cell. D)The movement of extracellular fluid parallel to the outer surface of the cell. E)The movement of intracellular fluid parallel to the inner surface of the cell.