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.
Mr. Potato Head (often referred to as simply Potato Head) is one of the supporting characters in the Disney / Pixar Toy Story movies Short Films and Halloween and Christmas specials. He is a moody, crabby Humpty Dumpty-like toy based on the Playskool toy of the same name. He is voiced by Don Rickles.