Those last three are called latent pacemakers, and they have slower depolarization rates - which is the rate at which they fire off electrical signals - and they get slower as you move further down.

后三者被称为潜在起搏点，他们的速率更慢（在这个速率下它们射电信号）向下级更远处传导时，它们会变得更慢。

Finally, the signal disperses out into Purkinje fibers, which trigger depolarization in all surrounding cells, causing the ventricles to contract from the bottom up like toothpaste tubes, at which point the whole cycle starts all over again.

最后，信号分散到浦肯野纤维中，触周围所有细胞的，导致心室像牙膏管一样下而上收缩，此时整个循环重新开始。

Yeah. We're in a society right now where the immediate question… Moderation of certain things in your habits definitely is part of what depolarization is all about.

嗯。我们现在所处的社会中，直接的问题是… 在你的惯中适量某些东西肯定是的一部分。

Normally, the resting state of sodium channels is stabilized by calcium ions, which prevents them from spontaneously opening and potentially causing depolarization.

正常情况下，钙离子用来稳定钠离子通道的静息状态，这可以防止钠离子通道开，从而导致。

In this situation, the depolarization wave conducts down the left bundle branch and then through the ventricles aberrantly, resulting in an abnormally wide QRS complex.

在这种情况下，除波向下传导到左束支，然后异常地穿过心室，导致一个异常增宽的QRS波群。

Moderation in your opinions, moderation in your principles, moderation in your convictions is not what depolarization is about.

你的观点要适度，你的原则要适度，你的信念要适度，这不是的意义所在。

A reentrant loop basically starts sending out depolarization waves to the rest of the heart tissue each time the wave goes around.

每沿着折返环路环绕一圈，它就开始向其余心肌组织放除波。

Alright, as a quick recap - A premature atrial contraction is when the atria contract too early because of a depolarization from an ectopic focus.

好，快速总结一下：房性期前收缩是指心房因为来异位起搏点的除而过早地收缩。

When that depolarization wave from an atrial ectopic focus gets to the AV node, there are a couple options.

当除波从房性异位起搏点到达房室结，它有许多选择可做。

These can appear lots of different ways depending on where the two depolarization waves meet each other.

这会以许多不同方式出现，取决于两个除波相遇的地点。

For example let's say that the depolarization happened this way - at an angle, then we'd break the vector into two parts.

比如，假设除波是沿着如图方向进行的，成一个角度，那么我们把向量分成两个部分。

That trend in political polarization or depolarization follows the same pattern exactly that the trends in social connectedness follow.

政治或的这一趋势，完全遵循了社会联系度变趋势的相同模式。

In right atrial enlargement, depolarization of the right atrium lasts longer than normal and its waveform extends to the end of that of the left atrium.

右心房扩大时，右心房除持续时间比正常长，波形延伸至左心房末端。

Another scenario, though, is if a depolarization wave from an atrial ectopic focus gets through the AV node but get sent through the ventricles abnormally like when a bundle branch is in refractory.

另一种情况，如果从房性异位起搏点来的除波通过了房室结，但却在一个异常的时间到达心室，比如当一个束支处于不应期。

The P wave represents the spread of the electrical impulse through the atria, and this is referred to as atrial depolarization.

P波代表电脉冲通过心房的传播，这被称为心房。

The QRS wave, which is sometimes called the QRS complex, represents the spread of the electrical impulse through the ventricles, or ventricular depolarization.

QRS波，有时被称为QRS波群，代表电脉冲通过心室的传播，或心室。

The QRS axis is the most important, and also the easiest to be determined, as it represents ventricular depolarization.

QRS轴是最重要的，也是最容易确定的，因为它代表心室。

S wave represents the last phase of ventricular depolarization at the base of the heart.

S波代表心脏底部心室的最后阶段。

Similarly, each of the limb leads produces its own viewpoint of the depolarization wave as well.

同样地，每一个肢体导联也在用不同的角度记录除波。

Making it easier to see exactly how the wave of depolarization moves through the heart.

让我们更清楚地看到，除波是怎样流过心脏的。