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5 Cards in this Set

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Membrane Potential
difference in electrical charge between the inside and the outside of a cell
Microelectrodes
Intracellular electrodes (piece of machine used to test charge)
Resting Membrane Potential
-70 mV
potential inside the resting neuron is about 70 mV less than the outside
(polarized)
Ions
particles that are either positively or negatively charged
How balance occurs?
Homogenous
1. Random Motion- more likely to move down concentration gradient than up- move away from highly concentrated areas, and towards low concentrated areas
2. Electrostatic Pressure- accumulation tends to be dispersed by the repulsion among the like charges and attraction of opposite charges