Neurons do not normally fire more than 1,000 times per second because
A) the absolute refractory period is typically about 1 millisecond.
B) the relative refractory period is typically about 1 millisecond.
C) the total refractory period is typically about 1 millisecond.
D) the sodium-potassium pump cannot repolarize the cell in less than 1 millisecond.
E) higher rates over excite the neuron.

Question

Quizplus · Accepted Answer

The absolute refractory period refers to the period of time when a neuron is unable to fire again due to the inactivation of voltage-gated sodium channels. This period typically lasts about 1 millisecond, which limits the maximum firing rate of neurons to about 1,000 times per second.

Neurons Do Not Normally Fire More Than 1,000 Times Per