Thus a receptor may be a protein, enzyme, membrane channel, or a region of a foreign pathogen.

这样的受体可以是蛋白质、酶、膜通道或外来病原体的一个区域。

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The electric field in biomembrane is an important parameter of deter-mining membrane channel switch.

细胞膜电场分布是决定细胞膜通道开或关的重要参数。

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An ion channel is a molecule that allows the passage of electrically charged atoms of sodium, potassium, calcium and so on through the outer membrane of a cell.

离子通道是一种分子，它允许钠、钾、钙等离子经由它通过细胞外膜。

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That change happens because something gets triggered in the membrane, and what gets triggered is a voltage gated sodium channel, which is shown here.

变化的原因是膜上某些东西被触发了,被触发的是钠离子电压门控通道,展示在这儿了

耶鲁公开课 - 生物医学工程探索课程节选

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

耶鲁公开课 - 生物医学工程探索课程节选

So, for example, if we look at sodium channels, and sodium channels are some of the particularly prevalent ones when we're talking about neurons, if you think about the cell membrane, and this little green cartoon is me trying to show a sodium channel here, and in this case, you can see that it's closed, such that no ions are getting through.

比如，让我们来看一下钠离子通道，钠离子通道是我们会经常遇到的几个之一,在讨论神经元的时候，如果大家想想细胞膜，而这个绿色的小示意图就是我用来表示,钠离子通道的，在这种情况下，大家可以看到它是关闭的，因此没有离子可以通过。

麻省理工公开课 - 化学原理课程节选

But the right circumstances depend on what is happening in the lipid layers because, by itself, a single gramicidin channel is not long enough to span the membrane and thus let any sodium ions through.

ECONOMIST: Medical diagnostics