試題詳解

5. Once acetylcholine binds to its receptor in the postsynaptic membrane, the membrane first becomes to open _______ channel, resulting in a depolarization. Then, followed by an outward flow of ______ , resulting in a hyperpolarization.
(A)
(B) K⁺ , Cl⁻
(C)
(D) Na⁺ , K⁺
(E) Na⁺