Communication in the Nervous System

Communication in the Nervous System - Communication in the...

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Communication in the Nervous System Neurons – nerve cells, brain’s communication specialists, transmitting information to, from, and within the CNS. Glia – glial cells, support, nuture, and insulate neurons. Remove debris Dendrite – branch of a tree, act like antennas, receiving messages from other neurons and transmits those messages toward the cell body. Cell Body – contains the biochemical machinery for keeping the neuron alive and determines whether or not the neuron will fire. Axon – transmits messages away from the cell body to other neurons or to muscle or gland cells. Often divide into branches called axon terminals Myelin Sheath – fatty material surrounding the axon. Prevents messages from adjacent cells to interfere with each other. Nodes – constrictions in the myelin sheath. Synapse – the site where transmission of a nerve impulse from one nerve cell to another occurs; it includes the axon terminal, the synaptic cleft, and receptor sites in the membrane of the receiving cell. Action Potential – a brief change in electrical voltage that occurs between the
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This note was uploaded on 03/11/2011 for the course PSYCH 001 taught by Professor Benbassi during the Spring '08 term at GWU.

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Communication in the Nervous System - Communication in the...

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