And when we talk about any type of ion channel, there are just tons of different kinds of ion channels, and you can characterize them in a few different ways.
而当我们讨论任何一种离子通道时,离子通道有非常多种,你可以用几种不同的方法来描述它们。
Because if it was a neurotransmitter activated ion channel, what would happen when the neurotransmitter bound here?
因为假如这是一个,神经递质激活的离子通道,当神经递质结合于此的时候,会发生些什么呢
However, when that gate is opened, the sodium channel is now going to be incredibly selective and only let through sodium ions and no other type of ion.
但是,当闸门打开的时候,钠离子通道,将会有极高的选择性,不允许除钠离子以外的任何其它离子通过。
The one that's on the top here is called ligand-gated ion channel and an ion channel is a protein that sits in the surface of a cell.
最上面的这个叫作配体门控离子通道,离子通道是一类位于细胞表面的蛋白
In some cases it might be a ligand-gated ion channel.
有时受体可能是一个配体门控离子通道
It can exist in - a gated ion channel - can exist in one or two states.
它们能够存在于,门控离子通道有一种或者两种状态
It would generate an electrical signal because it would - you'd open the ion channel and you would ion fluxes and you would change the membrane potential in just the way I described for the action potential.
它会产生一个电信号,因为--,离子通道会打开,产生离子流,膜电位会改变,像我讲动作电位时那样
It can also happen in other ways, it could be a G-protein coupled receptor which we talked about last time, which indirectly activates another ion channel to start the electrical signal.
还可以有其他方式,可以通过G蛋白偶联受体,这我们上次谈过,它可以间接激活,另一个离子通道以开启电信号
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