CAS BI 315 Lecture Notes - Lecture 10: Extracellular Fluid, Membrane Potential
6 Feb 2020
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Apsdepend on conformational changes of voltage gated channels. Kt channels open and close more slowly cdelayed. Open closed inactive v g nat channel only. 1 when cell hits threshold vgnat channels open. 4 vg kt close g nat channels open inactivate vgkt channels open membrane hyperpolarizes depolarize cell. Graded potentials are responsible for initial depolarization of a neuron. Localchanges in a neuron"s membrane potential due to activity of receptor proteins spreadpassivelyc fast usually outcomes of synaptic transmission but don"t regenerate like aps. If gradedpotentials depolarize the axonal potential enough aps are generated synapses specialized points of contact between neurons that allows information to transfer.
