PSY 205 Chapter Notes - Chapter 3: Postsynaptic Potential, Myelin, Cell Nucleus
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PSY 205 Full Course Notes
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Neurons: cells in the nervous system that receive, integrate and transmit information. Dendrite: parts in the neuron specialized to receive information. Soma: cell body, contains the cell nucleus and much of the chemical machinery common to most cells. Axon: a long, thin fiber that transmits signals away from the soma to other neurons or to muscles or glands. Myelin sheath: insulating material that encases axons, speeds up transitions. Terminal button:serve as messengers that activate other neurons, small knobs that secrete neurotransmitters. Synapse: place where information is transferred from one neuron to another. Glia: cells found throughout the nervous system that provide various types of support for the neurons, the glue . The neural impulse: using energy to send information. Resting potential: when neuron is stable, negatively charged and inactive. Action potential: a very brief shift in a neuron"s electrical charge that travels along an axon.