GENERAL HISTOLOGY

Detailed explanation-1: -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.

Detailed explanation-2: -Myelin is a lipid-rich material that surrounds nerve cell axons (the nervous system’s “wires") to insulate them and increase the rate at which electrical impulses (called action potentials) are passed along the axon.

Detailed explanation-3: -Myelin is an insulating layer, or sheath that covers the nerves, including those in the brain and spinal cord. It is composed of protein and fatty substances. It allows electrical impulses to transmit quickly and efficiently along the nerve cells.

Detailed explanation-4: -Myelin acts as an insulator that prevents current from leaving the axon; this increases the speed of action potential conduction. The nodes of Ranvier, illustrated below, are gaps in the myelin sheath along the axon. These unmyelinated spaces are about one micrometer long and contain voltage gated Na+ and K+ channels.