1. Biological and Physical Sciences Nervous System

2. Objective Identify the nerve cell, transmission, central and peripheral nervous systems in relation of Public Health.

3. OVERVIEW Nerve Cells Transmission Central Nervous System Peripheral Nervous System

4. Nerve Cells Neurons The functional unit Has only one axon and can have several dendrites

5. Nerve Cells Cell Body DendritesAxons

6. This colored scanning electron micrograph shows the synapses, or connections, between two nerve fibers (in purple) and a nerve cell (yellow). The picture is magnified 10,000 times. Nerve Cells - Synapse Prevents direct crossing to next neuron

7. Transmission 1. Electrical Impluse 2. Chemical Impluse 3. Neurotransmitter

8. Central Nervous System BrainCerebrumDiencephalon Brain Stem Cerebellum Spinal column Cerebrospinal fluid Meninges

9. Central Nervous System

10. Peripheral Nervous System  Cranial  Spinal Nerves

11. Peripheral Nervous System  Two division  Somatic Nervous System  Autonomic Nervous System  Sympathetic (“Fight or Flight” response)  Parasympathetic  (“Resting and Digesting”

12. Division of the Nervous System

14. Objective Identify the nerve cell, transmission, central and peripheral nervous systems in relation of Public Health.

15. Summary Nerve Cells Transmission Central Nervous System Peripheral Nervous System

16. Questions??