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Chapter 7 Study Guide 1. Understand how the resting membrane potential changes when Na+, K+, Cl- or Ca2+ channels open. 2. Understand what is meant by depolarization and hyperpolarization. 3. Give 6 ways movement through channels is regulated. 4. Be familiar with nervous system anatomy - nerve, neuron, cell body, dendrites, axon, terminal bouton (terminal end), synaptic cleft (synapse), ganglia, nuclei, tracts, supporting cells (neuroglial cells), Schwann cells. 5. Know the general structure of the nervous system (the major divisions) 6. Understand what initiates an action potential. (EPSP, IPSP, spatial and temporal summation) 7. Explain in detail what happens during an action potential and how it is propagated down the axon. (channels involved, channel openings and closings, absolute refractory period, relative refractory period, “all or none”, stimulus coding (FOX fig 7.15)). Be able to explain the action potential process and interpret or draw a graph of what is happening to the membrane potential during the process. 8. Explain how neuron signal transduction between neurons is stopped. 9. Compare conduction in myelinated and unmyelinated neurons - Why aren't all neurons myelinated? 10. List, describe and give usual locations of the 3 types of acetylcholine receptors. 11. List monoamine neurotransmitters. 12. List the three main catecholamines 13. Recognize other neurotransmitters (GABA, glycine, NMDA, endorphines, some polypeptides, some hormones, etc.)