2734953
Description
Mind Map by lucyslade1, updated more than 1 year ago
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Created by lucyslade1
over 9 years ago
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Ions
- Intracellular & extracellular
fluids are filled with ions
- Atoms or molecules with
+ or - electric charge
- Movement across plasma membrane
allows electrical signalling to occur
- 3 factors influence this
- Concentration Gradient
- Relative concentrations of molecule in
space or solution
- Relative concentrations of molecule in
space or solution
- Diffusion
- Molecules move
spontaneously from areas of
high to low concentration
- If left, equilibrium would happen
- In neurons at rest, there is no equilbrium
- In neurons at rest, there is no equilbrium
- If left, equilibrium would happen
- Molecules move
spontaneously from areas of
high to low concentration
- Electrical Charge
- Because of this, there is also voltage gradient
- Ions move down voltage gradient,
from areas of high to low charge
- Ions move down voltage gradient,
from areas of high to low charge
- Because of this, there is also voltage gradient
- Concentration Gradient
- 3 factors influence this
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