Monday, February 20, 2012

4/5 Charlie Lang: Neurons


-Neurons: carry information of the brain
-branched out (dendrites) like a tree
-they receive impulses and carry them to the cell body where they are needed.
-Glial cells are cells that surround the neurons in order to help regulate the environment within the brain and are also there for support and help and control the nervous system. 
-Controls:
1. body temperature
2. blood pressure
3. heart rate
4. breathing
5. 5 senses
6. psychical movement
7. think
8. dream
9. feel emotions
-the cerebrum is the largest part of the brain, taking up 85% of the brain's weight
-there are no pain receptors in the brain, so it cannot feel pain.
-uses 20% of the body's oxygen intake
-if the brain loses blood for 8 to 10 seconds then you lose consciousness.