Examples of freewheeling in a Sentence. 1  She led a freewheeling life in the city. 2  James Bond has long been the model of the freewheeling hero who encounters danger and excitement in every corner of the globe.
Myelin Function. By Sally Robertson, BSc. 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.he main function of myelin is to protect and insulate these axons and enhance their transmission of electrical impulses. If myelin is damaged, the transmission of these impulses is slowed down, which is seen in severe neurological conditions such as multiple sclerosis.
The myelin sheath is a cholesterol-enriched nerve cell insulator. Although you may often read about the negative consequences of too much cholesterol in your blood, cholesterol has many essential functions in your body.n your brain and nerve tissue, cholesterol is required for the formation of the myelin sheath, a fatty material that surrounds long portions of nerve fibers. Myelin insulates nerve cells and enhances the passing of electrical signals throughout your nervous systemâs circuitry.