The system that removes waste in the blood from the body

paired organs that clean the blood producing urine from waste

a group of different tissues that work together perform a specific function

a system specialized for bringing oxygen into an animal's body and removing carbon dioxide

the body system that recognizes and destroys pathogens and fights

diseases

answer choices: 1. excretory system

2 immune system

3 respiratory system

4 kidneys

5 organ

The system that removes waste in the blood from the body

Kidney

paired organs that clean the blood producing urine from waste

Excretory system

A group of different tissues that work Together perform a specific function

organ

A system specialized for bringing oxygen into an animal's body and removing carbon dioxide

respiratory system

The body system that recognizes and destroys pathogens and fights  diseases

immune system

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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2%? i tried finding the exact sorry if it's not 100% correct ; -;