1 On the other side of the water meter is another shutoff valve. 2  To shut off the water to the house, turn off the valve located BEFORE the water meter, on the supply side.hen you need to shut the water supply off to the entire house or when a local plumbing fixture has no local shutoff valve, the place to go is your home's water meter. 1  At the water meter you'll find a water supply line coming into the house from the outside.
exists and is an alternate of . The myelin sheath is composed of lipids, which are fats, they make for good protection as well as conductors for the electrical impulses of the brain. That is one reason that young babies need fat in their diets or else they wont get enough and the sheath may not be as developed as it should be.
Myelin is a fatty white substance that surrounds the axon dielectric (electrically insulating) material that forms a layer, the myelin sheath, usually around only the axon of a neuron. It is essential for the proper functioning of the nervous system.It is an outgrowth of a type of glial cell.The production of the myelin sheath is called myelination. In humans, myelination begins in the 14th week of fetal development, although little myelin exists in the brain at the time of birth.he main purpose of a myelin layer (or sheath) is to increase the speed at which impulses propagate along the myelinated fiber. Along unmyelinated fibers, impulses move continuously as waves, but, in myelinated fibers, they hop or propagate by saltatory conduction ..