Fill in the blank a)humidity b)relative humidity c)saturation point 1. the point at which the relative humidity reaches 100% is and the air can hold no more water vapor to the amount of water vapor in the air at any given time the amount of water vapor in the air at a certain temperature, compared to the amount of water vapor that could be in the air that temperature; usually expressed as a percentage

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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