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Definition
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Definition
| neural fibre that conducts impulses towards the cell body |
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Definition
| neural fibre that conducts impulses away from the cell body |
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Definition
| neurons that carry impulses into the CNS from a sense organ |
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Definition
| conduct impulses within the CNS, linking sensory & motor neurons |
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Definition
| carries electrical impulses from CNS to muscles or glands |
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Definition
| layer of fatty insulation round a nerve fibre (increases the speed of nerve impulse transmission) |
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Definition
| insulation of nerve fibres with myelin sheaths |
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Definition
| cell in the nervous system that physically supports neurons and produces myelin sheaths |
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| tiny vacuole containing neurotransmitter; found in the pre-synaptic neurons |
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Definition
| chemical released into a synaptic cleft to transmit impulses to the next cell |
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Definition
| gap between neurons at a synapse |
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Definition
| protein found in the post-synaptic membrane that binds neurotransmitter |
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Definition
| membrane of the neurone that contains receptors for the neurotransmitters |
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Definition
| membrane of the neurone that releases neurotransmitters |
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Definition
| signal that affects a receptor and which can be passed on |
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Definition
| signal that affects a synaptic receptor but is not passed on |
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Term
| converging neural pathways |
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Definition
| pathway in which impulses from many neurons are passed to one neuron |
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Definition
| neurotransmitter involved in reducing the intensity of pain and other actions |
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Definition
| neurotransmitter involved in inducing the feeling of pleasure and other actions |
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Definition
| neural pathway that produces pleasure |
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Term
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Definition
| chemical neurotransmitter or a drug that mimics one |
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Definition
| drug that inhibits transmission of nerve impulses |
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Definition
| substance that changes neurochemistry; many are illegal |
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Definition
| increase in number or sensitivity of receptors as a result of exposure to drugs |
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Definition
| decrease in number or sensitivity of synaptic receptors as a result of exposure to drugs |
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Definition
| effect of sensitisation by antagonists |
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Definition
| effect of desensitisation by agonists |
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Term
| Mood, Cognition, Perception, Behaviour |
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Definition
| four features of a person that are altered by recreational drugs (CLUE m,c,p,b) |
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