Term
| __ types of synaptic transmission |
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Definition
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Term
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Definition
| place where signals are transmitted from one neuron (presynaptic neuron) to another neuron (postsynaptic neuron) |
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Term
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Definition
3 structures
-synaptic knob
-synaptic cleft
-plasma membrane of a postsynaptic neuron |
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Term
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Definition
| tiny bulge at end of presynaptic neuron's axon, contains neurotransmitters |
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Term
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Definition
| space between presynaptic and postsynaptic neuron |
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Term
| Plasma membrane of a postsynaptic neuron |
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Definition
| contains protien receptors for neurotransmitters |
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Term
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Definition
| action potential reaches knob, Ca++ channels open and cause neurotransmitters to be released across synaptic cleft to the plasma membrane of the postsynaptic neuron, impulse continues |
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Term
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Definition
-released and bind to receptors on the postsynaptic cell
-classified by function and by chemical structure
-4 main types |
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Term
| 4 main types of neurotransmitters |
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Definition
-acetylcholine
-amines
-amino acids
-other small molecules |
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Term
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Definition
-found in brain
-seratonin and histamine
-catecholamines |
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Term
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Definition
| Dopamine (cocaine blocks uptake of dopamine), epinephrine and norepinephrine |
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Term
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Definition
| results from insufficient amines in the brain |
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Term
| Most disorders of nervous system involve _______ rather than _______ |
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Definition
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Term
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Definition
| disorder of oligodendrocyte; myelin destruction and loss due to autoimmunity and/or viral infections |
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Term
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Definition
| most common type of brain tumor, usually benign, but still life threatening |
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Term
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Definition
| highly malignant form of an astrocytic tumor, spreads in white matter of the brain |
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Term
| Multiple neurofibromatosis |
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Definition
| numerous fibrous neuromas throughout the body, severe disfiguration |
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