1. The Nervous System

2. http://learn.genetics.utah.edu/content/add iction/drugs/mouse.html

3. WHAT PARTS DO YOU KNOW THAT ARE IN THE NERVOUS SYSTEM? Brain Spinal Cord Peripheral Nerves

4. Central Nervous System Peripheral Nervous System The Nervous System SomaticAutonomic SympatheticParasympathetic Spinal Cord Brain

5. What makes up the brain, the spinal cord or your peripheral nerves? Neurons are “the cell” Cell body Nucleus Axon Dendrite What do you think surrounds the cell? What other organelles would be needed?

6. Neurons

7. How do neurons work?

8. How are neurons connected? Synapses!!

9. Why are neurons connected?

10. More neuron connections!

11. Close up look at your synapse The synapse - where the action happens The next cell’s plasma membrane What is this in the membrane ? Transport protein

12. The Spinal Cord and Reflex Arc

13. YOUR BRAIN!!!!!!

14. A complicated system…

15. SYMPATHETIC

16. A complicated system… SYMPATHETIC AUTONOMIC

17. A complicated system… SYMPATHETIC AUTONOMIC PARASYMPATHETIC

18. A complicated system… SYMPATHETIC AUTONOMIC PARASYMPATHETIC

19. A complicated system… SYMPATHETIC AUTONOMIC PARASYMPATHETIC

20. A complicated system… SYMPATHETIC AUTONOMIC PARASYMPATHETIC

21. A complicated system… SYMPATHETIC AUTONOMIC PARASYMPATHETIC RECEPTORS

22. I sense something…

23. What do you think can change neurons and their connections? Accidents Drugs Alcohol Disease

24. Accidents Physical injury of your neurons

25. Drugs and alcohol bind important receptors on neurons

26. Repeated binding causes the neuron to die

27. Drugs = neuron death

28. Alcohol damages dendrites - can repair after abstinence Alcohol blocks receptors and slows down transmission

29. Parkinson's Disease ALS - Lou Gehrig’s Disease Huntington’s Disease Multiple Sclerosis Alzheimer's Cerebral Palsy Epilepsy ? SIDS

30. 100 Billion or so neurons - what’s the problem with some of them dying? Cells multiply all the time - will your neurons? Does everyone react the same way to accidents, or drugs and alcohol? Do all organisms react the same to all stimulus? Which of your activities use your neurons?

31. What if neurons die here? or here