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Psychology 1100 terms chp 3 - Neuron parts, etc . neurons...

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Neuron parts, etc...neuronscells in the nervous system that communicatewith one another to perform informationprocessing tasksComponent of neuronCell body, Axon, Myelin Sheath,Terminal button, dendrite, synapse.cell bodythe part of the neuron that coordinates information processing tasks and keeps the cell aliveaxonthe part of the neuron that transmitsinformation to other neurons, muscles, orglands. Each neuron has a single axon.myelin sheathan insulating layer of fatty material,is composed of glial cells.Terminal buttonknoblike structures that branch out from an axon. Aterminal button is filled with tiny vesicles, that containneurotransmitters, chemicals that transmit informationacross the synapse to receiving neuron's dendrites.dendritethe part of a neuron that receivesinformation from other neurons and relays itto the cell bodysynapsethe junction or region between the axon of one neuronand the dendrites or cell body of another.dendrites and axons of neurons do not actually toucheach other.Types of neurons, etc...
Major type of NeuronsSensory, motor and interneuronssensory neuronsneurons that receive information from theexternal world and convey this informationto the brain via the spinal chordmotor neuronsneurons that carry signals from the spinalchord to the muscles to produce movementinterneuronsneurons that connect sensory neurons,motor neurons, or other interneuronsglial cellssupport cells found in the nervous system. includeastrocyte and oligodendrocytes. many functions: supportcells in the brain, wrap neuron axon in myelin, clearcellular debris, form blood-brain barrierPurkinje cellshas an elaborate treelike assemblage ofdendrites. carry info from the cerebellum tothe rest of the brain and spinal cordPyramidal cellshave a triangular cell body and a single, longdendrite with many smaller dendrites. foundin the cerebral cortex.bipolar cellshave only one dendrite and single axon. atype of sensory neuron found in the retinas ofthe eye.Neural communication...Our thoughts, feelings and actions depend onneural communication, how does it happen?The communication of information within and between neurons proceeds in two stages-conduction and transmission.The first stage is the conduction of an electric signal over relatively long distance within neurons,from the dendrites, to the cell body, then throughout the axon. The second stage is thetransmission of chemical signals between neurons over the synapse.Together, these stages are electrochemical action of neurons.
ionssmall electrically charged moleculesresting potentialthe difference in electric charge between the inside and outside of a neuron's cell membrane. Inresting state K+ molecules flow freely across the cell membrane, but Na+ are kept out, creating adifference in electric charge between the inside and outside of a neuron's cell membrane. The

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Term
Fall
Professor
Hansen

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