2 Points
How would relaxing the smooth muscles in arteries affect blood pressure?
O
A. Blood pressure would decrease
O
B. Blood pressure would shay the same
O
C. Muscle contraction is not related to blood pressure
O
D. Blood pressure would increase

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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the missing space is phylum

where in your body is there an enzyme that does function at a high or low ph? what is the name of that enzyme and its function?