The myelin sheath is a protective covering that surrounds fibres called axons, the long thin projections that extend from the main body of a nerve cell or neuron.This sheath is composed of protein and lipids.amaged myelin. Multiple sclerosis is an autoimmune condition where the bodyâs own immune cells attack this myelin sheath. T cells strip the myelin from the nerve fibers it protects, meaning the fibers are left exposed and uninsulated.
The London Eye has held its position as the biggest Ferris wheel in the world since 2000, reaching a whopping 135m and adding an oomph to the London skyline that has other countries salivating. The London Eye held the title as the biggest Ferris wheel in the world for six years. China was next to get in on the game. In 2006 they introduced their own wheel of fortune, Star of Nanchang, which soared 165m above the ground.
In early 1893, William Somers received the first U.S. patent for a Roundabout, of which he had erected three wooden, fifty-foot wheels in 1892 at Asbury Park and Atlantic City, N.J., and Coney Island, N.Y. But Ferris was the first to build one in steel, and on so monumental a scale.