Which of the following is true of the action potential?
a. More sodium channels are opened at a lower voltage level than are the potassium channels.
b. The action potential requires 10 msec for completion.
c. The action potential requires the activity of the sodium-potassium transporters during the rising phase.
d. More potassium channels are opened at a lower voltage than are sodium channels.
e. The overshoot is due to a prolonged change in sodium conductance.
Question 2
Which of the following sets of terms do NOT belong together?
a. saltatory conduction; faster conduction speeds in smaller neurons
b. open sodium channels; membrane depolarization
c. saltatory conduction; slower conduction speeds in smaller neurons
d. open potassium channels; membrane repolarization
e. sodium-potassium pump; restoration of the normal concentrations of these ions
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