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.
Greg Maddux is truly one of the great pitchers of our time and as close to a sure thing as you can get to make the Hall of Fame. As far as many collectors are concerned Greg Maddux has already made their collecting Hall of Fame. His cards are among the most collected of all pitchers. 2014 Topps Triple Threads Greg Maddux Baseball Card. $2.50.