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.
The most popular variety of sweet potatoes is perhaps Yam that has a moist flesh and has orange color that makes it different from the white skinned sweet potato. Sweet potatoes have many different colors, and they range from white to golden to brown to orange to red skinned sweet potatoes. One property that makes sweet potatoes special is their ability to not to destabilize blood sugar, despite the fact that they are sweeter than their more famous counterpart, brown potatoes.