The myelin sheath is found on the axon of neurons. The main focus in this topic relies under 2 main structures: Schwann cells and nodes of Ranvier where both serve respectively to produce myelin sheath along the axon and increase the speed of propagation of a neural message.
Note : the speed of neural message through a nerve relies mainly on the number of neurons present, the presence/absence of myelin sheath, and the diameter of the nerve.
