2734901
Descripción
Mapa Mental por lucyslade1, actualizado hace más de 1 año
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Creado por lucyslade1
hace más de 9 años
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Resting Membrane Potential
- Specific distribution of ions at rest
make the inside of the neuron
negative relative to the outside
- Electrical potential: measure of
stored power, or potential energy
- Created by a difference in charge across a membrane
- Created by an unequal distribution of ions
- Created by an unequal distribution of ions
- Created by a difference in charge across a membrane
- Actively maintained by channels, gates &
pumps in plasma membrane to counter effects of diffusion and voltage gradients
- Large, negatively charged A- anions remains inside cell
- Ungated K+ channels allow K+ to move freely across membrane
- K+ is kept out
- Na+/K+ pumps bring K+ into cell
from extracellular fluid
- The pumps pass Na+ out of cell from
intracellular fluid
- The pumps pass Na+ out of cell from
intracellular fluid
- Large, negatively charged A- anions remains inside cell
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