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EXAM #4 (Neurons (synapses (Electrical (direct cytoplasmic connections…
EXAM #4
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Nervous system
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membrane potenial >> excess Na+ outside excess of K+inside>>>>leaky K+ channels that are always open
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action potential
IPSP>> hyperpolarization
more negative, influx of __
EPSP Depolarization
less negative, more positveInflux of
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Raising phase
Influx of Na+>>>stimulus cause neuron to depolarize reaching a voltage Na+ threshold. which stops Na channels
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How are they propagated?
they are in the direction to the synaptic terminals> accelerated by myelinated sheaths. or fat axons
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