PSY100H1 Chapter 3: Summary of Chapter 3
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PSY100H1 Full Course Notes
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Chapter three the biological bases of behavior. communication in the nervous system: key parts of the neuron. Cells in the nervous system fall into two categories: neurons. Neurons: individual cells in the nervous system that receive, integrate, and transmit information. Soma (=cell body): contains the cell nucleus and much of the chemical machinery common to most cells. Dendrites: parts of a neuron that are specialized to receive information. Axon: a long, think fiber that transmits signals away from the soma to other neurons or to muscles or glands. Myelin sheath: insulating material, derived from glial cells, that encases some axons. Terminal buttons: small knobs that secrete chemicals called neurotransmitters. Synapse: junction where information is transmitted from one www. notesolution. com neuron to another: glia. Glia: cells found throughout the nervous system that provide various types of support for neurons. Supply nourishment to neurons, help remove neurons" waste products, and provide insulation around many axons: the neural impulse.
