Vaccines have been subjected to quite a bit of controversy in recent years. currently, the centers for disease control and prevention (cdc) recommend that healthy people receive a flu vaccine every year.
what are your current perceptions of the flu vaccine? do you think these recommendations are appropriate? explain your reasoning.

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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multiplying and dividing the two decimals and the eqations by the same number of the overalls