Ions

lucyslade1
Mind Map by lucyslade1, updated more than 1 year ago
lucyslade1
Created by lucyslade1 over 6 years ago
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Ions for ItN module

Resource summary

Ions
  1. Intracellular & extracellular fluids are filled with ions
    1. Atoms or molecules with + or - electric charge
      1. Movement across plasma membrane allows electrical signalling to occur
        1. 3 factors influence this
          1. Concentration Gradient
            1. Relative concentrations of molecule in space or solution
            2. Diffusion
              1. Molecules move spontaneously from areas of high to low concentration
                1. If left, equilibrium would happen
                  1. In neurons at rest, there is no equilbrium
              2. Electrical Charge
                1. Because of this, there is also voltage gradient
                  1. Ions move down voltage gradient, from areas of high to low charge
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