<span>Georgio instantly feels pain due to the message carried to his brain by </span>myelinated axons. The message of the ache is carried by unmyelinated axons.
The myelinated axon is highly "insulated" axon that r<span>eceives input and transmit impulse quickly.</span>
The purpose of the naked axon with larger dendritic field which is called unmyelinated axon is to receive as much input as possible.
<span>nerve cells need b 12 for proper functioning</span>
The respiratory system that allows for Gas Exchange happens between Alveolar Spaces and Capillaries