2. Nissil Bodies

3. Axon Hillock

4. Motor Neuron

5. Schwann Cell

7. Functional Classification 1. Sensory (afferent) 2. Motor (efferent) 3. Interneurons Conducts action potentials from periphery to CNS Transmits action potentials from CNS to periphery Impulses to effectors Completely within CNS Transmits action potentials from one part of CNS to another part of CNS

8. Neuroglia

9. Neuroglia CNS Oligodendrocyte- Forms Myelin Astrocyte- Promote blood brain barrier, nourish neuron, strengthen. "mommy" Ependymal- Produce cerebrospinal fluid, form blood brain barrier Microglia- Phagocytize bacteria

10. Neuroglia PNS Schwann Cell- Myelin Satellite Cell- nourish and support (The mommy for the PNS)

11. Disorders of the Neuroglia Amyotrophic Lateral Sclerosis/ Lou Gehrig's- Astrocyte's secrete toxins that destroy neurons Hungtington's- Microglia secretes toxins destroying neurons

13. Membrane Potential

20. Measuring the Action Potential

21. http://highered.mcgraw- hill.com/sites/0073525707/student_view0/cha pter10/voltage- gated_channels_and_the_action_potential.ht ml

23. Neurotransmitters +30 or more types Acetylcholine – stimulates skeletal muscle contractions Monoamines Norepinephrine Dopamine Norepinephrine & Dopamine generate a sense of well-being in CNS Amphetamines increases levels of dopamine & Norepinephrine Amino Acids GABA General Inhibitory neurotransmitter in CNS Opens Cl- channels, Cl- influx hyperpolarizes cell Some Anesthesia enhance GABA secretions Schizophrenia – associated with GABA deficiency Gas Nitric Oxide (NO) Vasodilator Released during sexual arousal Viagra prolongs the presence of NO