Although most people don't know it, the body heals itself when given a chance. It can normally handle insomnia, headaches from tight muscles that cut down blood flow to the head anxiety and pain. If it can't, then we need to look at nutritional deficiencies along with other possible causes. The marvelous network of nerves is governed at several points in the body, with the brain as master control. Even within the brain several higher and lower command centers work together to make millions of variable adjustments needed every day to keep us in good health.
Quick information is supplied to the brain by sight, sound, smell and taste.
Touch may travel from various parts of the body at more than 400 feet per second-slow when compared to the speed of light, but fast enough for just about any emergency. Every nerve making up the system has certain similar characteristics, but may look very different, depending on function. Its cell wall branches out In two ways one connects with sending nerves, the other transmits signals to the next receiving nerve. There are both general and specialized nerves. Previously, it was believed that nerves, once killed, would forever be dead and never replaced by other cells.