AP PSYCHOLOGY

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.

Detailed explanation-2: -A myelin sheath is a sleeve (sheath) that’s wrapped around each nerve cell (neurons). It’s a protective layer of fat (lipids) and protein that coats the main “body” section of a neuron called the axon.

Detailed explanation-3: -Myelination is the formation of a myelin sheath, therefore axons which are covered by this insulating sleeve of protection are said to be myelinated axons. If an axon is not surrounded by myelin sheath, it is said to be unmyelinated.

Detailed explanation-4: -Myelin is made by oligodendrocytes in the central nervous system (CNS) and Schwann cells in the peripheral nervous system (PNS).

Detailed explanation-5: -The long slender projection of a neuron, also known as an axon, which conducts impulse away from the cell body remains covered by a fatty sheath known as myelin sheath.