Resting membrane potential in nerve fibre -
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Is equal to the potential of ventricular muscle fibre
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Can be measured by two electrodes on surface of neuron
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Increases as extracellular K+ increases
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Depends upon K+ equilibrium
View Explanation
RMP of nerve- -70mV
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RMP of ventricular muscle- -90mV
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Potential difference can be measured if one electrode is on the surface and another one inside the nerve cell.
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If the concentration of K+ in ECF is increased, there is more positivity of the membrane OR Less negativity of the membrane OR Decreased magnitude of RMP.
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Resting membrane potential is reached due to the potential difference between ICF and ECF. This is majorly as result of K+ ion concentration difference in ECF and ICF.