Why do interneurons not have myelin sheath

The myelin sheath is a fatty insulating later that surrounds the nerve cells of jawed vertebrates, or gnathostomes.This insulation acts to increase the rate of transmission of signals.If an axon is not surrounded by a myelin sheath, it is unmyelinated.A layer of myelin serves as the outer covering of the axons in these fibers.Why do some neurons have myelin sheaths?

Each of these wraps around and insulates a short length (about 1mm) of a single axon.> do interneurons have myelin sheats?The basic functional unit of the nervous system is the neuron.Why can the organism afford not to cover interneurons in the reflex arc with a myelin sheath?Popular answers (1) hi zhou, as a rule interneurons have shorter axons, when compared to the principal (projections) neurons.

Myelin sheath is a fatty substance that acts as an insulation to protect the nerve fibers from the outside environment and also increases the speed of signal conduction.In the pns these are schwann cells.