Use complete sentences to explain what happens in the nervous system when your finger is hurt. Include an explanation of what a neuron is.

So say that you cut your finger, this causes tissue damage, which is registered by microscopic pain receptors in your skin, and each one of those pain receptors creates one end of a nerve cell. The nerve cell is connected to the other end of the spinal cord with a long nerve axon.

A neuron is a nerve cell that is the basic building block of the nervous system.

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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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