After entering the left atrium, the blood goes through the second atrioventricular valve called the mitral valve into the left ventricle.

进入左心后，血液穿过第二个室瓣膜，称为二尖瓣，进入左心室。

Now, all that blood then goes through the first of two atrioventricular valves that separate the atria from the ventricles.

然后，所有血液首先经过三尖瓣，它是将心、心室分室瓣膜之一。

Now after both the aortic and pulmonary valves have shut down, the atrioventricular valves open again, letting the cycle start all over again.

当主动脉瓣和肺动脉瓣都关上后，室瓣再次打，使心动周期重新始。

Now once the ventricles have filled up, both of the atrioventricular valves snap shut, creating a long, loud sound that sounds a bit like " lub" .

现在一旦心室被血充满，所有室瓣都关上了，发出一个长、响声音，有点像“lub" 。

S1, caused by the atrioventricular valves closing, at the beginning of systole, and S2, caused by the aortic and pulmonary valves closing, at the beginning of diastole.

S1是由于室瓣关闭导致，发生在收缩早期；S2是由于主动脉瓣和肺动脉瓣关闭导致，发生在舒张早期。

An atrioventricular or AV block is used to describe when the signal is delayed or blocked when it's trying to move from the atria to the ventricles.

室传导阻滞是指当电信号由心传导至心室时发生延误或阻滞。

In this form, the great arteries still connect to the wrong ventricle, but it's just that the ventricles are the one's that switch places along with their atrioventricular valves.

在这种构造中，大动脉仍然连接着错误心室，只是心室和室瓣是一起交换位置。

This so-called " group beating" can be differentiated from a type 1 second-degree atrioventricular heart block by identifying the abnormally shaped p-waves that are characteristic of an atrial ectopic focus.

所谓“成组搏动”可以通过辨认性异位起搏点产生异常形状P波二度I型室传导阻滞相鉴别。

This type where it goes up from ventricle to atrium, is called Atrioventricular reentrant tachycardia (or AVRT) with orthodromic conduction, and can lead to very high ventricular rates, between 200 and 300 bpm.

这种电冲动从心室传导到心类型，称为顺向传导室折返性心动过速（AVRT）；它可以导致很快心室率，达到每分钟200-300次。

The impulses leap across synapse-like connections between the cells called gap junctions, and continue down the conduction system until they reach the atrioventricular node, or AV node, located just above the tricuspid valve.

这些脉冲跨越细胞之间称为间隙连接突触状连接，并沿着传导系统继续前进，直到它们到达位于三尖瓣正上方室结或室结。

The path the electrical impulse takes to the bottom of the heart is called the atrioventricular bundle, also known by the more rad name, the bundle of His, where it branches out to the left and right ventricles.

电脉冲到达心脏底部路径被称为室束，还有个更棒名字——希斯氏束，它在那里分支到左心室和右心室。

It's then delayed just slightly as it goes through the atrioventricular or AV node, before it passes through the Bundle of His and to the Purkinje fibers of the left and right ventricles, causing them to contract as well.

之后，它在通过室结时发生了短暂延搁，而后通过室束以及左右室浦肯野纤维，使左右心室收缩。