Quiz
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| Neurons | Nerve cells
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| Soma | The cell body of a neuron
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| Dendrites | Treelike structures projecting from the soma that receive neural messages from neighbring neurons
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| Axon | The tubelike part of a neuron that carries messages away from the cell body toward other neurons
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| Myelin Sheath | A layer of protective insulation that covers the axons of certain neurons and helps speed transmission of nerve impulses
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| Terminal buttons | small knobs that secrete chemicals called neurotransmitters
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| Synapse | a junction where information is transmitted from one neuron to another
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| Glia | cells found throughout the nervous system that provide various types of support for neurons
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| Neurotransmitters | chemicals that transmit information from one neuron to another
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| Synaptic cleft | a microscopic gap between the terminal button of one neuron and the cell membrane of another neuron
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| Synaptic vesicles | small sacs within the terminal buttons that store neurotransmitters
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| Postsynaptic potential (PSP) | a voltage change at a receptor site on a postsynaptic cell membrane
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| Excitatory PSP | a positive voltage shift that increases the likelihood that the postsynaptic neuron will fire action potentials
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| Inhibitory PSP | a negative voltage shift that decreases the likelihood that the postsynaptic neuron will fire action potentials
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| Reuptake | a process in which neurotransmitters are sponged up from the synaptic cleft by the presynaptic membrane
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| Agonist | a chemical that mimics the action of a neurotransmitter
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| Antagonist | a chemical that opposes the action of a neurotransmitter
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| Endorphins | internally produced chemicals that resemble opiates in structure and effects
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Created by:
Pickcory