The nervous system has two different major parts. The two parts are the central nervous system and the peripheral nervous. The central nervous system or the CNS contains the brain and the spinal cord. All together, the brain and the spinal cord serve the nervous system's command station.
== Greg Maddux Signed Baseball Card == A Greg Maddux autographed baseball card is worth between $20. -$30. Prices may vary based on condition, and the type of authenticity that accompanies the signature. Signatures that have not been authenticated could sell at half the market value or less.
The bulk of the value relies on the value of the signature of the player that signed the card, and how well the card displays the signature. In general a signed baseball card is worth about 30% - 40% the price of a signed baseball or the same price of a signed 8 x 10 photo. A high valued card can add some value.