Draw a cross section of the spinal cord and show how the three types of neurons interface with the leg. Is the brain involved in this pathway? Why or why not?

Need the answers if its a multiple choice question

The answer is c the potato slice shriveled because water moved out of the slice into the salt solution

Air enters through the nose (and sometimes the mouth), moves through the nasal cavity, the  pharynx, the  larynx, enters the  trachea, moves through the  bronchi  andbronchioles  till the alveoli.