LS02 - NPB 12 Lecture 2 The similarities between axon and...

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NPB 12 Lecture 2
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The similarities between axon and dendrite: * Both are the extensions from the soma (cell body) of neuron cells. * Both carry electrochemical information. The differences between axons and dendrites: * Axons can be myelinated; dendrites cannot myelinated. * Axons do not contain ribosomes; dendrites contain many ribosomes * There is usually one axon per cell; many dendrites branch from one cell. * Axons carry information out of the cell; dendrites carry information into the cell
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Santiago Ramón y Cajal (1852-1934) Newborn infant cerebral cortex Golgi staining Neuron Theory Camillo Golgi (1843-1926)
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Anterograde: away from the cell body Retrograde: toward the cell body Fast Anterograde: 50 – 400 mm / day Fast Retrograde: 200 – 500 mm / day Slow transport: 1 - 8 mm / day Very slow transport: 0.1 - 1 mm / day
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Kinetics of Slow Axonal Transport
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Nissl Stain Myelin Stain Golgi Stain Nissl Stain: hippocampus (http://brainmaps.org/)
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This note was uploaded on 11/08/2010 for the course NPB 72121 taught by Professor Hwai-jongcheng during the Fall '10 term at UC Davis.

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LS02 - NPB 12 Lecture 2 The similarities between axon and...

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