ABSTRACT
In general, the nervous system has three functions. First of all, specialized cells detect sensory information from the environment and then relay that information to other parts of the nervous system (such as the brain, for example). A second segment of the system directs the motor functions of the body, often in direct response to sensory input. Finally, part of the nervous system is involved in processing of information. These integrative functions include such processes as thought, consciousness, learning, and memory. All of these functions are potentially vulnerable to the actions of toxicants.
