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~BN08 neurons & glia

~BN08 neurons & glia - Neurons Glia Lecture 8...

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Neurons & Glia Lecture 8
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Nature of the Nervous System Golgi & Cajal shared Nobel Prize (1906) Reticular Theory Camillo Golgi The Neuron Doctrine Santiago Ramon y Cajal Silver chromate Golgi Stain ~
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Neurons Basic functional unit of N.S. Specialized cell All cells have same basic properties Regulation of behavior Information processing Transmits Integrates Stores ~
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Dendrites & Soma Receives & Integrates information electrical signal within ~
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Axon carries information away from soma Electrical signal within Axon terminal releases chemical message ~
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By function (connections) Neuron Classification
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By Morphology # of neurites Multipolar, bipolar, monopolar By Dendrite Structure Pyramidal Stellate Dendritic Spines Spiny or Aspinous ~
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Unipolar Bipolar Multipolar By morphology (# of neurites)
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By Axon Diameter Sensory afferents Size: largest smallest A α , A β , A δ , C C: small, unmyelinated pain & temperature A α : not associated with skin receptors proprioceptors in muscle ~
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Primary Afferents Conduction speed larger faster & myelinated faster~
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