Help 100-150 words
Structure and Function: Compare how membrane structures in the loop of Henle
and collecting duct of the mammalian kidney enable water to be recovered from
filtrate in the process of osmoregulation.

Answer is in the photo. I can't attach it here, but I've uploaded it to a file hosting. link below! Good Luck!

cutt.ly/Kzv78uJ

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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1 digestive system

2 stomach

3 bladder

4 carbon deoxide

5 tiger