01:830:313 Lecture Notes - Lecture 3: Myelin, Phagocytosis
3 Feb 2018
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Document Summary
The neuron: the pump relevant to us is the na+/k+ pump. It pumps: na+ out and k+ in, this helps maintain constant ion concentration. Gradients inside and outside the neuron: ion channels, some proteins contain a tunnel -like pore through. Which a specific ion can move into or out of the neuron, I. e. , flow through the membrane: ion channels can open or close, a process called. Gating : the opening and closing of ion channels control the. Influx and efflux of ions through the membrane: this process controls the electrical activity of the. Each ion channel is selective for one ion species: Cl- channels: b. ion channels are also classified according to how. They are gated (opened or closed): non-gated (always open, voltage-gated: open or close as the membrane. Potential changes: neurotransmitter-gated: open or close when a. Neurotransmitter binds to its receptor: receptors, one part of receptor contains a binding site for, a. neurotransmitter ( transmitter ; nt , b.
