The valves that separate the ventricles from the blood vessels leaving the heart are called the semilunar valves.

将心室和离开心脏的血管分开的称为半月形。

These valves are called the semilunar valves and they separate the ventricles from the blood vessels leaving the heart.

这些称为半月，们将心室与远离心脏的血管分开。

When blood is forced out of the ventricles, the semilunar valves open wide, allowing the blood to pass into the arteries.

当血液被迫流出心室时，半月形会张开，从而使血液进入脉。

Blood now moves from the right ventricle through the pulmonary semilunar valve, which is the valve that separates the right ventricle and the lungs.

现在，血液从右心室通过半月，半月是将右心室和分开的。

We also remember that the semilunar valves, which are the valves that guard the arteries leaving the heart, are closed at this time.

我们还记得半月，是保护离开心脏的脉的，此时已关闭。

The right ventricle pumps blood through the pulmonary semilunar valve into the pulmonary trunk, which is just a big vessel that splits to form the left and right pulmonary arteries.

右心室通过半月将血液泵入脉干，脉干只是一个大血管，分裂形成左右脉。

Now, the " DUB" sound — and, just to be clear, I am not talking about dubstep sounds — that's the aortic and pulmonary semilunar valves closing at the start of diastole.

现在，“DUB”音——澄清一下，我不是在说 dubStep 音——是主脉和半月在舒张期开始时关闭。

When the ventricle is filled, it contracts, forcing the tricuspid valve to close and forcing the blood through the pulmonary semilunar valve on its way to the lungs.

心室充盈时，收缩，迫使三尖关闭，迫使血液通过半月进入部。

When this right ventricle contracts, it forces the pulmonary semilunar valve to open, allowing a rush of blood into the pulmonary trunk, which is the large artery that leaves the right ventricle.

右心室收缩时，会迫使半月打开，从而使血液涌入脉，后者是离开右心室的大脉。

The blood continues on its one-way path out of the left ventricle through the aortic semilunar valve, which is the valve that separates the left ventricle and the arteries leading to the body.

血液通过主脉半月继续沿其单向路径流出左心室，该将左心室和通向人体的脉分开。

At this point, the ventricles are under high pressure, and this high-pressure blood is forced out of the ventricles and into the large arteries leaving the heart through the now-open semilunar valves.

此时，心室处于高压状态，这种高压血液被挤出心室，进入大脉，通过现在打开的半月离开心脏。

When the ventricles contract, blood in the right ventricle is forced through the pulmonary semilunar valve into the pulmonary artery; at the same time, the tricuspid valve closes to prevent the backward flow of blood into the atrium.

进入脉的血液被运至，进行氧合过程，即与周围环境进行氧及二氧化碳（细胞的一种代谢废物）的交换。