1. The Nervous System
Collects and responds to information – internal and external to the body

2. Two Parts
CNS & PNS

3. Peripheral Nervous System (PNS)
Nerves and supporting cells
Collects information about the body’s internal and external environment

4. Peripheral Nervous System
Somatic
Autonomic

5. Neurons are Nerve Cells

6. Central Nervous System
Brain and spinal cord
Processes information and creates the response

7. Myelin insulates the nerve cells

8. Right brain / Left brain

9. * Be able to identify *

11. Phineas Gage

12. Nerves communicate via synapses
neurotransmitters

13. Transmissions are electrochemical
Synapse is the space between nerve cell endings
Neurotransmitters are the chemicals that relay the message

15. Meth, alcohol, nicotine and opiates increase the release of dopamine – the body reacts by decreasing dopamine receptors.

16. Dopamine receptors in the Limbic Region (pleasure center)