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15 Cards in this Set
- Front
- Back
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The Neuron Doctrine
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The nervous system is made up of discrete cells called neurons.
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Histological Procedures
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19th Century scientists discovered ways to process or "fix" brain tissue in spite of Jello-like consistency - formaldehyde hardens tissues & microtome slices the brain to view under microscope.
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Nissl stain
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class of dyes which selectively color some parts of brain cells - the cell bodies (a.k.a. Nissl bodies)
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Histology
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The microscopic study of tissue structure.
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Neurohistology
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The microscopic study of the nervous system
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Golgi stain
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soaking brain tissue in a silver chromate solution darkly colors the cell bodies and neurites
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Franz Nissl
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German neurologist late nineteenth century
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Camillo Golgi
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Italian histologist
1843 - 1926 Believed neurites are fused together to form a continuous reticulum, or network, similar to the circulatory system. |
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Santiago Ramon y Cajal
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19th Century Spanish histologist and artist; believed neurons communicate by contact, not continuity.
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Golgi v. Ramon y Cajal
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Shared Nobel Prize in 1906 but remained bitter rivals to the end.
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Neuronal Language
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"Excitatory" & "Inhibitory"
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Soma
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Plural: somata
Cell body which contains cytosol and organelles. |
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Perikaryon
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Plural: perikarya
Cell Body which contains cytosol and organelles. |
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Cytosol
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Salty, potassium-rich solution within soma that is separated from the outside by the neuronal membrane.
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Organelles
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Membrane-enclosed structures within the soma.
Nucleus Rough Endoplasmic Reticulum Smooth Endoplasmic Reticulum Golgi Apparatus Mitochondria |
