When a nerve is cut, both the nerve and the insulation are severed. Sometimes, the fibers inside the nerve break while the insulation remains intact and healthy. If the insulation has not been cut, the end of the fiber farthest from the brain dies. The end that is closest to the brain does not die.
circuit breaker. n. 1. An automatic switch that stops the flow of electric current in a suddenly overloaded or otherwise abnormally stressed electric circuit. 2. An automatic halt or suspension in the trading on a stock exchange that takes effect in response to a specified amount of loss.
Circuit breaker meaning. Circuit breaker definition. A protective device that will make and break the flow of current when current draw becomes excessive. Unlike the fuse , it does not blow out but vibrates on and off thus giving the driver some light to stop by. Also see cutout .