


Within the brain, many different and separate regions are responsible for many different and separate functions. That suggests it is made of two organs-and you may not even think of the spinal cord as an organ-but the nervous system is a very complex structure. The picture you have in your mind of the nervous system probably includes the brain, the nervous tissue contained within the cranium, and the spinal cord, the extension of nervous tissue within the vertebral column. List the basic functions of the nervous system.Relate the functional and structural differences between gray matter and white matter structures of the nervous system to the structure of neurons.

Identify the anatomical and functional divisions of the nervous system.By the end of this section, you will be able to:
