PSY 177 Lecture Notes - Lecture 2: Acetylcholine, Glossopharyngeal Nerve, Psy
31 May 2017
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Document Summary
Neurons, or nerve cells, are the most important part of the nervous system unique in a lot of way. 1800s: microscopy allows for the observation of cells. Researchers developed staining techniques to visualize neurons in different ways taking a substance to make the neuron appear a different color, helps to distinguish neurons from surrounding environment. Fills whole cell to show fine structural detail darker color in the cell body and red for axon. Stains only a small number of total cells and to have that level of detail that"s impossible. Dye is attracted to rna within cell body stains the cell body but not other features. Allows for measurement of cell body size and density. Camillo golgi: neurons are continuous with one another, like a series of tubes a single. Santiago ramon y cajal: neurons are contiguous (beside one another, but not connected); close but not touching believed they had small gaps between one another.
