The Difference Between Sodium and Potassium in the Generation of Action

Multiple Choice

The difference between sodium and potassium in the generation of action potential is:

A) sodium causes repolarization of the cell membrane and potassium causes depolarization of the cell membrane.
B) sodium causes unipolarization of the cell membrane and potassium causes repolarization of the cell membrane.
C) sodium causes repolarization and potassium is not required in the action potential mechanism.
D) sodium causes depolarization of the cell membrane and potassium causes repolarization of the cell membrane.