Most of the axons in the central nervous system are wrapped in myelin, a substance rich in lipids (fatty substances) and proteins. Like the coating around an electrical wire, myelin insulates and protects the axon and helps speed nerve transmission.
Potato/Semi Round Pearls. Potato pearls are some of the less expensive freshwater pearls to be found on the market, but their look is anything but cheap. You can purchase potato pearls in every color of the rainbow, and craft beautiful one of a kind creations for gifts and your own collection.
Mouse Potato. Definition - What does Mouse Potato mean? Mouse potato is a term for someone who spends a lot of leisure time or discretionary time sitting in front of a screen connected to the Internet. It is a modern take on the older term couch potato, that refers to someone who spends a lot of time in front of a television.