I've used various versions of the Stick and I agree completely that it seems overpriced when you consider what it *is*, but the darn thing is good at what it *does*, and you'll quickly get over the cost.
In vertebrate species it consists of two main parts, the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS contains the brain and spinal cord. The PNS consists mainly of nerves, which are enclosed bundles of the long fibers or axons, that connect the CNS to every other part of the body.
THE NERVOUS SYSTEM. 9.1 Introduction. A. Neurons = masses of nerve cells that transmit information to other nerves, tissues or cells (nerve impulses) 1. ___________________ - contains the nucleus and two extensions. 2. ___________________ - shorter, more numerous, receive information. 3. _________ - single, long fiber which conducts impulses away from the cell. B. The nervous system is divided into two parts: