Voltage clamp data, in which investigators analyzed membrane conductances during action potentials, showed all of the following except:

Voltage clamp data, in which investigators analyzed membrane conductances during action potentials, showed all of the following except:

Voltage clamp data, in which investigators analyzed membrane conductances during action potentials, showed all of the following except:



  1. the sodium current was rapidly activated by depolarization.
  2. the potassium current activates on a comparatively slow time scale of a few ms.
  3. at certain potentials, there can be zero current even with a large conductance.
  4. depolarization leads to a time-dependent inactivation of the sodium current.
  5. depolarization leads to a time-dependent inactivation of the potassium current.

Answer: 5