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9 Cards in this Set
- Front
- Back
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electrical gradient
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difference in electrical charge inside and outside of cell
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resting potential
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osmotic and electrostatic pressure. result of negatively charged proteins in cell
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sodium-potassium pump
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protein complex, repeatedly pumping 3 Na+ out of cell and 2 K+ in
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temporal sumation
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overlap of EPSPs and IPSPs in time
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spatial summation
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sumation of potentials of EPSP and IPSP across cell body and dendrites
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saltatory conduction
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the jumping of action potentials from one node of ranvier to the other
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graded potentials
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occur when a local neuron receives information from other neurons. membrane potentials that vary in magnitude without following the all-or-none law.
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refractory period
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absolute, about 1 ms after AP
relative, about 2-4ms after absolute |
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roel of glia and K+ in AP
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glia absorbs K+ outflow from AP and transports K+ to walls of nearby arteries. K+ ions dilate artrery walls and increase flow of blood to that region.
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