Question

What is the event that creates the absolute refractory period?

a.
Potassium leak channels close

b.
Calcium voltage-channels close

c.
Sodium voltage-gated channels inactivate and will not open until the membrane potential drops below threshold

d.
Localized ion concentrations become imbalanced so abnormal current flows result

e.
Potassium blocks the voltage-gated sodium channels, and continues to do so until removed by the Na+/K+ pump

Answer 1

Сorrect answer is:
c.