試題詳解

4. Which description about the status of action potential of voltage-gated Na+ and K+ channels is FALSE?
(A) resting state: both Na+ and K+ channels close
(B) depolarization: some Na+ channels open and K+ channels close
(C) rising phase of action potential: both Na+ and K+ channels open
(D) falling phase of action potential: Na+ channels close and K+ channels open
(E) None of the above