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，室和主动脉的高压和静脉和的低压之间的差距越大，一升血过你系统的速度就越快。

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

最终，所有的血都回至上静脉和下静脉，最终抵达。

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

当血从门静脉静脉的通道阻塞时，就会发生这种情况。

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（如下静脉扩张）。

As the inferior vena cava passes through both abdominal and thoracic cavities, an increase in abdominal pressure together with a decrease in thoracic pressure squeeze the blood upward- toward the heart.

当下静脉同时通过腹和胸时，腹压力增加和胸压力降低会将血上挤压—脏。

This circuit is concerned with supplying food and oxygen to all the tissues of the body and carrying away waste materials from the tissues for disposal.

来自于肺和其它组织的血经（上下）静脉回至脏。静脉将血运至。

The venae cavae has two divisions.

静脉有两个分支。

Because the venae cavae is your largest vein, you can recall this term by thinking of the venae cavae as the vein with the biggest cavity.

因为静脉是最大的静脉，我们可以将静脉看作是最大的静脉来回忆这个术语。

They drain your body tissues, and then merge to make larger and larger veins and finally converge to form the largest veins in the body, called the venae cavae.

它们排出身体组织，然后汇合形成越来越大的静脉，最后汇合形成体内最大的静脉，称为静脉。

Small veins converge to form larger and larger veins, which eventually drain into the venae cavae.

小静脉汇聚形成越来越大的静脉，这些静脉最终排入静脉。

The venae cavae empties the deoxygenated blood into the right atrium of the heart.

静脉将脱氧血注入脏的。

So far, we've learned that blood returning to the heart from head to toe drains into the superior and inferior vena cava.

到目前为止，我们已经了解到，血从头到脚回脏，入上下静脉。

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.

下静脉比上静脉长得多，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回到脏。