The insulation that covers some axons and increases the speed of transmission of the neural impulse is the

A) neurotransmitter sheath.
B) myelin sheath.
C) glia wrap.
D) terminal cover.

Myelin Sheath

A layer of fatty tissue surrounding the axons of some neurons that speeds up the transmission of electrical impulses.

Insulation

Material or substance used to prevent heat, sound, or electricity from escaping or entering.

Axons

Long, slender projections of nerve cells that transmit electrical impulses away from the neuron's body to other neurons, muscles, or glands.