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

question 16

Multiple Choice

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.

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