PSYB65H3 Chapter Notes - Chapter 3: Peripheral Nervous System, Neuroglia, Sensory Neuron
9 Jul 2015
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Chapter 3 what are the fucntional units of the. Cells use the proteins they produce to play a dynamic role in orchestrating our behavior. Nervous-system cells are small, are packed tightly together, and have the consistency of jelly. Scientists, who study tissue, have developed many techniques for viewing and describing both dead and living brain cells. Visualization of these cells are made by using dyes that either color an individual cell completely, color some of the cells" components, or color the cell only when it is engaged in a particular activity. Golgi suggested that the nervous system is composed of a network of interconnected fibers, he thought that information, like water running through pipes, somehow flowed around this nerve net and produced behavior. Cajal, came to a different conclusion using golgi"s stain to study the brain tissue of chick embryos. Cajal"s neuron theory that neurons are the functional units of the nervous system is now universally accepted.
