Question

Why a nerve has fatty insulation around it​

Answer 1

Answer:

to conduct the impulse signal without any leakage

Answer 2

Myelin is an insulating layer, or sheath that forms around nerves, including those in the brain and spinal cord. It is made up of protein and fatty substances. This myelin sheath allows electrical impulses to transmit quickly and efficiently along the nerve cells. If myelin is damaged, these impulses slow down.