What is the role of the nervous system in the body? A. To gather and respond to information
B. To protect other organs and tissues
C. To send messages using blood cells
D. To transport oxygen and carbon dioxide

A. To gather and respond to information

Explanation:

the answer that best describes the relative refractory period in the neuron is the resting membrane potential is restored, but concentrations of sodium and potassium are not restored to their original state.

the refractory period is the time during which another stimulus given to the neuron will not lead to a second potential. thus, because na+ channels are inactivated during this time, additional depolarizing stimuli do not lead to new action potentials.  

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