membrane potential
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| show | Action Potential (AP)
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| show | Resting Membrane Potential (RMP)
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| RMP= | show 🗑
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| Na+ (outside) | show 🗑
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| show | 14 mEq/L
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| show | 4 mEq/L
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| show | 140 mEq/L
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| show | memorize it
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| show | Membrane potentials
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| highly concentrated inside | show 🗑
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| diffuses outside creating electronegativity inside while electropositivity outside the plasma membrane | show 🗑
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| show | diffusion potential
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| show | (-) 94 mV
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| highly concentrated outside; low concentration inside | show 🗑
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| show | Na ions
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| Relation of diffusion to the concentration difference | show 🗑
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| show | +/- 61 x log conc. inside divided by conc. outside
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| the diffusion potential level across a membrane that exactly opposes net diffusion of a particular ion through the membrane | show 🗑
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| ___________ are most important ions involved in the development of membrane potentials in nerve, muscle as well as neuronal cells in the nervous system | show 🗑
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| The degree of importance of each of the ions in determining the voltage is proportional to the _________ for that particular ion | show 🗑
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| show | electronegativity
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| show | Nondiffusible (-) anions
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| Permemability of Na and K channels undergo rapid changes during | show 🗑
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| show | Cl permeability
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| show | signal transmission in neurons
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| show | Na - K Pump
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| show | Na - K Pump
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| show | Effects Na- K Pump
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| show | Effects Na- K Pump
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| show | Effects Na- K Pump
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| show | Effects Na- K Pump
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| show | Goldman Equation
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| When a membrane is permeable to several different ions, the diffusion potential that develops depends on three factors: | show 🗑
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| Gives the calculated membrane potential on the inside of the membrane when two univalent positive ions, K+ and Na+, and one univalent negative ion, Cl- are involved. | show 🗑
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| Several key points become evident from the Goldman equation: _________,___________, and ____ are the most important ions involved in the development of mebrane potentials in nerve and muscle fibers, as well as in the neuronal cells in the nervous system. | show 🗑
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| The concentration of _______,__________,________ across the membrane helps determine the voltage of the membrane potential | show 🗑
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| show | membrane permeability
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| If the membrane has _______ permeability of potassium and chloride ions, the membrane potential becomes entirely dominated by the concentration gradient of sodium ions alone, and the resulting potential will be equal to the _________for sodium | show 🗑
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| show | Origin of the Normal Resting Potential:
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| show | Origin of the Normal Resting Potential:
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| Contribution of the Sodium Diffusion through the Nerve Membrane | show 🗑
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Created by:
scarletsailboat