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11 Cards in this Set
- Front
- Back
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Synapse |
junction b/n 2 neurons or neuron & effector |
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Presynaptic Neuron |
conducts impulse towards synapse |
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Pastsynaptic Neuron |
conducts impulse away from synapse |
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Graded Potentials |
short-lived localized changes in membrane potential
diminish in strength as distance increases |
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Action Potentials (Never Impulses) |
Strength correlates with strength of the stimulus |
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Excitatory Post-Synaptic Potentials (EPSPs) |
local graded depolarization events |
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Inhibitory Post-Synaptic Potentials (IPSPs) |
local graded hyperpolarization events |
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Spatial Summation |
postsynaptic neuron stimulated simultaneously by large number of presynaptic axon terminals
EPSP + IPSP |
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Temporal Summation |
postsynaptic neuron stimulated in quick succession by 1 or more presynaptic neurons |
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Absolute Refractory Period |
neuron cannot respond to another stimulus |
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Relative Refractory Period |
Only strong stimulus can stimulate another action potential |
