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

局部压迫上腔静脉甚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.

在脏右侧，分别是上腔静脉、升主脉、右室、左室和下腔静脉。

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指大血管" Great vessels" ，包括了上腔静脉、下腔静脉、升主脉、主脉弓、肺脉与降主脉。

The superior vena cava is found in the upper chest.

上腔静脉位于上胸部。

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

上腔静脉像通向脏的引流管。

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.

右侧的肺上沟瘤还会压迫上腔静脉；上腔静脉汇集头部、上胸部和上肢的血液。

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

上半身血液通过上腔静脉回流，下半身血液通过下腔静脉回流。

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，下半身的血液流入下腔静脉，上半身的血液则流入上腔静脉，由这两者将血液送回右房。

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.

上腔静脉的作用很简单，和体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.

这是考虑上腔静脉的好方法，因为它的工作是将脱氧的血液直接排入（或回流）到右房中。

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.

上腔静脉和下腔静脉，这些分支都将血液回流到脏的右房。

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.

当房收缩时，右房血液经三尖瓣进入右室。

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，如果我们考虑上腔静脉的外观和名称，我们很容易将其定义为从头部和手臂将脱氧血返回脏的大静脉。

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.

下腔静脉比上腔静脉长得多，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血液回流到脏。