Resting Membrane Potential

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EXAM 4

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7 Terms

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Cell membrane separate charges

  • ICF (-) relative to ECF (+)

  • membrane is polarized

  • RMP occurs only across cell membrane (thin layer)

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Voltage measured between two points

  • reference electrode - ECF

  • Recording electrode - ICF

  • Potential energy measured in mV

  • Resting membrane potential = 70mV (neurons/muscle fibers)

3
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Due to distribution of ions across membrane

  • ions important in polarization of neuron

  • most important

    • sodium

    • potassium

  • Proteins - largely trapped on inside of membrane

  • Chloride - near equilibrium

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N/a

n/a

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