What Insulates Neurons? - Myelin Sheath Explained

The myelin sheath is an insulating layer of a white fatty substance that surrounds axons, enhancing nerve impulse transmission. It is formed by glial cells, which wrap around the axon, creating a protective and insulating layer. The myelin sheath allows for faster and more efficient conduction of electrical signals along the axon, enabling rapid communication between neurons. This is essential for a wide range of functions, including movement, sensation, and thought processes. Without the myelin sheath, nerve impulses would travel much slower and less efficiently, leading to impaired nervous system function. \n\na. myelin sheath \n\nb. axon \n\nc. glial cell \n\nd. dendrite