Both vena cavas [sic] are veins, which bring blood towards the heart.

上、下腔脉均为脉，运送血液回流到心脏。

So, the bigger the gap is between the high pressure in your ventricles and aorta, and the low pressure in your vena cava and atria, the faster a liter of blood will flow through your system.

所以，心室和主动脉高压和腔脉和心房低压之间差距越大，一升血液流过你系统就越快。

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.

右侧肺上沟瘤还会压迫上腔脉；上腔脉汇集头部、上胸部和上肢血液。

Once the liver processes all these substances, it sends the blood to the heart through the inferior vena cava to enter the systemic venous system.

一旦肝脏处理了所有这些物质，肝脏将血液通过下腔脉进入体脉系统送往心脏。

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，分别是上腔脉、升主动脉、右心室、左心室和下腔脉。

In place of a nerve, they were convinced that a vena amoris—or “lover's vein”—connected this digit with the blood-pumping organ.

不过，他们相信不是神经，而是一条“爱之脉”（vena amoris），认为这手与心脏之间有直接血液联系。

Got it. Wait, I-I think I can localize the bleeding. I think it's coming from the inferior vena cava.

搞定。等等，我想我可以把血止住了。我想它是从下腔脉出来。

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，下半身血液流入下腔脉，上半身血液则流入上腔脉，由这两者将血液送回右心房。

These peritubular capillaries then reunite to become the cortical radiate veins, then the arcuate veins, then interlobar veins and finally into the left and right renal veins which connect to the inferior vena cava.

这些肾小管周围毛细血管网将重新汇聚成小叶间脉，然后汇聚成弓状脉、叶间脉，最终汇入左右肾脉；肾脉又与下腔脉相通。

Also, a filter can be surgically placed in the inferior vena cava to prevent pulmonary embolisms.

也可以放置下腔脉滤器来防止肺栓塞发生。

This happens when there's an obstruction in the passage of blood from the portal vein towards the vena cava.

当血液从门脉流向腔脉通道阻塞时，就会发生这种情况。

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

局部压迫上腔脉甚至能造成阻断后方脉压升高。

Ultimately, all of the blood ends up in the superior or inferior vena cava and dumps into the right atrium.

最终，所有血液都回流至上腔脉和下腔脉，最终抵达右心房。

CT scan or MRI help diagnose ascites, cirrhosis, splenomegally or vascular alterations like inferior vena cava dilatation.

CT扫描或MRI有助于诊断腹水、肝硬化、脾肿大，或血管病变（如下腔脉扩张）。

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大血管" Great vessels" ，包括了上腔脉、下腔脉、升主动脉、主动脉弓、肺动脉与降主动脉。

But in some situations, an obstruction may prevent blood flow from the portal vein towards the inferior vena cava.

但有时从门脉流到下腔脉血流会受阻。

The gold standard for determining if there is portal hypertension is obtaining a hepatic venous pressure gradient measurement where a catheter is inserted inside the inferior vena cava and then inside the portal vein to measure the difference between both pressures.

确定是否存在门脉高压症金标准是测量肝脉压力梯，即将导管先后插入下腔脉、门脉内测量两个压力之间差异。

If you sleep flat on your back, as Dr. Goffman said, the structure we're most worried about is the inferior vena cava, so it's this big blood vessel bringing blood back up to your heart and your head.

如果你平躺在背上睡觉， 正如戈夫曼博士所说，我们最担心结构是下腔脉，这是将血液带回心脏和头部一条大血管。

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，右房内血液经三尖瓣进入右室。

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.

上腔脉作用很简单，和体内其他许多主要脉一样，它不过是一个运输管。