generation of the signal in the SA node,

从窦房结中发出信号
movement to the AV node,hesitation.

传至房室结延迟
Then,movement of this signal down the septum in between the left

接着信号沿着左右心室的室间隔
and the right ventricle,

向下传导
through the Purkinje system,

直至浦肯野氏纤维系统
and the heartbeat being generated in this regular anatomical pattern.

接着有规律的心跳形成
That happens because these specialized tissues

这一切都是由于这些特殊的组织
are able to conduct signals very rapidly,

可以非常迅速的传导信号
and you can see here in this slide,

这张幻灯中你们可以看到
this is how fast a signal

这是一个动作电位
the velocity of an action potential being propagated

作为信号传遍各个不同组织的
through different tissues

速度有多快