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Unformatted text preview: -Vm= Sum of Ex of all ions-Na/K pump-Establishes concentration and electrical gradients-ion pump and ion channels balanced at Vm Graded potentials-Change in permeability change in membrane potential ( ∆ Vm)-generates electrical signals-local change in ion flow-confined to small region of plasma membrane-magnitude is variable-cell is polarized at rest-depolarized= negativity-hyperpolarized= negativity-repolarized= to rest-Characteristics-stimulatory vs inhibitory-response related to stimulus strength-signal diminishes with distance...
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This note was uploaded on 04/22/2008 for the course EEOB 232 taught by Professor Bronson during the Spring '07 term at Ohio State.
- Spring '07