What does a myelin sheath do in a nerve cell?

Answer 1

A Meylin Sheath increases the speed of the nerve impulses and electronically insulates the fibers from one to another.
A disease that effects the myelin sheath is multiple sclerosis (MS).

The function of the myelin sheath is to act as an insulator for the nerve cell. It's kind of like the rubber casing found on the outside of wires to protect the electron movement inside and allow us not to get shocked. MS causes the destruction of the myelin sheath which causes it to scar and harden and as a result we short circuit in our body. This is equivalent to peeling off some of the rubber casing off a wire and then plugging the wire into a socket.

Some results of MS are:

-double vision

-speech impairment

-jerky limbs

-paralyzed muscles.

Answer 2

myelin is not a cell but it is a sheath around nerves that conduct impulses to the nerves they cover. once the myelin sheath is gone, either because of damage or disease it is very hard to grow more, it almost never happens. The myelin is made from glial cells or schwan cells.

Answer 3

The fibre that carries impulses to the effector organ is called axon which is covered by a sheath made of a fatty material called myelin. The myelin then insulates the axon preventing short circuits with other axons and also speeds up the conduction of the impulses. The sheath is formed by the membranes of special cells that wrapthemselves around the axon as it develops

Answer 4

nothing