PSY100Y5 Chapter Notes - Chapter 3: Amygdala, Fluoxetine, Hypothalamus
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PSY100Y5 Full Course Notes
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Document Summary
Nervous system is made up of living tissue composed of cells. Cells in the nervous system are either glia or neurons. Soma (cell body): contains the cell nucleus and much of the chemical machinery common to most cells. Dendrites: parts of the neuron that are specialized to receive information, branch- like structures. Axon: a long, thin fiber that transmits signals away from the soma to other neurons or to muscles or glands, may be quite long and may branch off to communicate with a number of cells. Axons are wrapped in cells with a high concentration of a white, fatty substance (myelin: myelin sheath: insulating material, derived from glial cells, that encases some axons, speeds up the transmission of signals that move along axons. To summarize, information is received at the dendrites, is passed through the soma and along the axon, and is transmitted to the dendrites of other cells at the synapses.
