On the other end of the capillary bed there's a venule, and the arteriole and venule are usually directly connected by a vessel called the metarteriole.

在毛细管床另一端，有小静；小动和小静通常由一种叫后微动管直接连接。

The cells send their CO2 and other junk out to the venal end of the capillary exchange where the capillaries unite into venules, and then merge into veins that head back to the heart.

细胞将二氧化碳和其他垃圾输送到毛细管交换静端，毛细管在那里结合成小静，然后合并成静返回心脏。

But Sickle Cell Anemia causes the red blood cells to stick together. Then, they can block small veins.

状细胞贫会导致红细胞粘在一起。然后，它们会阻塞小静。

Interestingly, once the blood leaves these glomeruli it does not enter into venules.

有趣，当动离开这些肾小球后，并不进入小静。

The oxygen-rich blood moves into a venule and then, eventually, into a pulmonary vein that dumps the blood into the left atrium.

富含氧气液汇入小静，最终进入肺静；肺静将液排入左心房。

Loaded up with carbon dioxide, the blood turns that dark red color again (shown as blue) and starts the return journey to the heart by going into small venules and then larger veins.

随着二氧化碳增加，液会再次变成暗红色（画为蓝色）并开始返回心脏，先进入小静，然后较大静。

So as we get older, especially at my age, the smooth muscle around our small veins, our venules, They get weak, and our little venules get stiff.

所以随着年龄增长，特别到了我这个年纪，我们小静周围平滑肌会变弱，而这些小静也会变得僵硬。

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

小静汇聚形成越来越大静，这些静最终排入腔静。