Even partial compression of the superior vena cava can cause the venous pressure behind the obstruction to increase.

局部压静脉甚至能造成阻断后方的静脉压升高。

On the right side, the superior vena cava, ascending aorta, right ventricle, left ventricle, and inferior vena cava should all be visible.

在心脏右侧，分别是静脉、升主脉、右心室、左心室和下静脉。

Lastly, G is for great vessels which includes the superior vena cava, inferior vena cava, ascending aorta, aortic arch, pulmonary artery, and descending aorta.

最后，G指大管" Great vessels" ，包括了静脉、下静脉、升主脉、主脉弓、肺脉与降主脉。

The superior vena cava is found in the upper chest.

静脉位于胸部。

The superior vena cava resembles a drain that leads down into the heart.

静脉像向心脏的引流管。

A Pancoast tumor in the right lung apex can also compress a large vein called the superior vena cava which drains blood from the head, upper chest, and arms.

右侧的肺沟瘤还会压静脉；静脉汇集头部、胸部和肢的。

Blood from the upper body returns via the superior vena cava, blood from the lower body returns via the inferior vena cava.

半身过静脉回流，下半身过下静脉回流。

Now, the lower half of the body drains into the inferior vena cava and the upper half drains into the superior vena cava both of which dump blood back into the right atrium.

然后，下半身的流入下静脉，半身的则流入静脉，由这两者将送回右心房。

The job of the superior vena cava is simple, and like many other major veins in the body, it is nothing more than a transportation tube.

静脉的作用很简单，和体内其他许多主要静脉一样，它不过是一个运输管。

This is a good way to think about the superior vena cava, because its job is to drain (or return) deoxygenated blood straight down into the right atrium.

这是考虑静脉的好方法，因为它的工作是将脱氧的直接排入（或回流）到右心房中。

The venae cavae has two divisions: the superior vena cava and the inferior vena cava, and these divisions both return blood to the right atrium of the heart.

静脉和下静脉，这些分支都将回流到心脏的右心房。

Blood returning from tissues other than the lungs enters the heart by way of the venae cavae; the superior vena cava and the inferior vena cava. The venae cavae empty into the right atrium.

当心房收缩时，右房内经三尖瓣进入右室。

Therefore, if we take into consideration the superior vena cava's appearance and name, we can easily define it as the large vein that returns deoxygenated blood to the heart from the head and arms.

因此，如果我们考虑静脉的外观和名称，我们很容易将其定义为从头部和手臂将脱氧返回心脏的大静脉。

The inferior vena cava is much longer than the superior vena cava, and you could argue that it has a bigger job, because it returns blood to the heart from all body regions below the diaphragm.

下静脉比静脉长得多，可以说它有更大的作用，因为它从横膈膜下的所有身体区域将回流到心脏。