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Mesh term Membrane Potentials

Browse to parent terms:
Biophysical Phenomena
Cell Physiological Phenomena
Electrophysiological Phenomena
Nervous System Physiological Phenomena


The voltage differences across a membrane. For cellular membranes they are computed by subtracting the voltage measured outside the membrane from the voltage measured inside the membrane. They result from differences of inside versus outside concentration of potassium, sodium, chloride, and other ions across cells' or ORGANELLES membranes. For excitable cells, the resting membrane potentials range between -30 and -100 millivolts. Physical, chemical, or electrical stimuli can make a membrane potential more negative (hyperpolarization), or less negative (depolarization).

Browse to child terms:
Action Potentials
Membrane Potential, Mitochondrial
Myoelectric Complex, Migrating
Synaptic Potentials

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