Neurons - Spatial Scale of CNS CNS Systems Maps Networks...

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Unformatted text preview: Spatial Scale of CNS CNS Systems Maps Networks Neurons Synapses Molecules 1m 10cm 1cm 1mm 100 m m 1 m m 1 A Cells Revealed by Staining ● Effects of staining are limited – Golgi completely stains a small portion of cells – Nissl stains cell bodies – Weigert stains myelin, the surrounding tissue on axons Nissl stains in cortex Neurons pyramidal cell from human motor cortex axon hillock Neurons in Reflex Circuit Reflex Response Logigo List at least three aspects of action potential behavior that were observed during Friday's lab. Channel States During Depolarization Action Potentials (APs) ● Sodium conductance is determined by the membrane potential. ● When depolarized, the membrane potential increases. Na flows in, causing the membrane potential to increase even more. This positive feedback loop causes an action potential (AP) ● Using your understanding of channel conductances, explain your observations from lab. Action Potentials (APs) ● Sodium conductance is determined by the...
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This note was uploaded on 08/24/2011 for the course CMSC 131 taught by Professor Anderson during the Fall '09 term at Bard College.

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Neurons - Spatial Scale of CNS CNS Systems Maps Networks...

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