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

但是镰状细胞贫血会导致红细胞粘在一起。然，它们会阻塞静。

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

有趣的是，当动血离开这些肾，并不进入静。

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

富的血液汇入静，最终进入肺静；肺静将血液排入左心房。

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

静汇聚形成越来越大的静，这些静最终排入腔静。

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.

在毛细血管床的另一端，有静；动和静通常是由一种叫微动的血管直接连接的。

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.

随着二化碳的增加，血液会再次变成暗红色（画为蓝色）并开始返回心脏，先是进入静，然是较大的静。

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.

细胞将二化碳和其他垃圾输送到毛细血管交换的静端，毛细血管在那里结合成静，然合并成静返回心脏。