neurobio 4 ch 3 of Bear book: the neuronal membrane at rest part 1 (membrane potential, action poten

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mikepl103
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260023
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neurobio 4 ch 3 of Bear book: the neuronal membrane at rest part 1 (membrane potential, action poten
Updated:
2014-02-03 17:08:09
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neurobio Bear book neuronal membrane rest part potential action ion pump nernst equation goldman
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2014,biology,neurobiology
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neurobio 4 ch 3 of Bear book: the neuronal membrane at rest part 1 (membrane potential, action potential, ion pump, nernst equation, goldman equation)
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  1. what are the two forces that cause ions to move?
    diffusion and electricity
  2. what is electrical potential, aka voltage?
    the force exerted on a charged particle, and it reflects te difference in charge between the anode and cathode. More current will flow as the difference i increased. For ex, the difference in potential between the terminals of a car battery is 12 volts; that is, the electrical potential at one terminal is 12 volts more positive than that at the other.
  3. what are two important factors that determine how much electrical current will flow?
    electrical potential and electrical conductance
  4. what is the resting potential of a typical neuron?
    -65 mV
  5. what concentration of ions is required to change the membrane potential from 0 to -80?
    0.00001mM
  6. is the difference in charge between the inside and the outside of the cell localized or delocalized?
    the net difference in electrical charge occurs at the inside and outside surfaces of the membrane
  7. how would one calculate the equilibrium potential for one particular ion?
    using the nernst equation

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