Wednesday, December 8, 2010

the important of the body and brain.

the brain and nervous system are made up of a number of specific structures, which much function as an integrated system to regulate behaviour. The nerve pathway outside the central nervous system form the peripheral nervous system, Sensory neurons in the PNS carry messages from the outside  world to the CNS via the sense receptors, such as those located in the eyes and ears, while motor neurons are responsible for initiating muscle,activity, under the direction of the CNS. The neurons which comprise the CNS are called interneurons, because they are intermediate between sensory and motorneurons.
  I learned that brain is very important to us to function our emotional, physical and psychological.many of us use right handed hand which the functioning of the brain is left and when we use the left handed hand the functioning of the brain is right.
And I learned also that the effects of drugs like stimulants is a very dangerous to us because it can increase our heartbeat and blood pressure. We know that many of us use drugs to forget our problem and to become a powerful and energetic body but it is not good to our body and maybe we can die if we always taking drugs.