The vessels are tubes that spread through a person's body.

管遍布人体管道。

The extracellular component includes both the intravascular space - the space within the blood and lymphatic vessels and the interstitial space - the space between cells where you typically find fibrous proteins and long chains of carbohydrates which are called glycosaminoglycans.

细胞外部分包括管道内空间，即血管和管内空间以及间质空间，即细胞之间空间，通常能找到纤维蛋白和叫糖胺聚糖（即黏多糖）长链碳水化合物。

That's where the lymphatic vessels, or lymphatics, come into play: they collect excess interstitial fluid and return it to the blood.

这就管发挥作用地方了：它们收集过量间质液并把它们运回血液。

If there were no way out of the pleural space, then it would fill up with fluid, but fortunately, there are lymphatic vessels in the pleura that drain the fluid away and deliver it back into the circulatory system.

如果没有从胸膜腔出来途径，那么液体将填满这个间隙，过幸好，胸膜里管能将液体引流出胸膜腔，并送回循环系统。

All of that excess fluid gets pulled into the afferent lymphatic capillaries, which are closed-ended vessels found throughout the body, even the brain, which is actually discovery made in 2015.

所有剩余液体流进传入毛细管；管遍布全锁管道；2015年，科学家发现大脑中也存在管。

Once the lymph is inside the lymphatic capillaries, it travels through bigger and thicker-walled vessels, then trunks, and then ducts.

一旦进入毛细管，它就会通过更大、管壁更厚管，然后干，再然后导管。

Primary lymphedema, on the other hand, is when there isn't some other disease or factor that leads to lymphatic obstruction.

而原发性水肿没有其他导致管阻塞疾病或因素。

Lymphatic capillaries are extremely permeable because their walls are made of endothelial cells that only loosely overlap, forming one-way minivalves.

毛细管极度通透，因为它们管壁仅由松散重叠内皮细胞构成，形成单向微小瓣膜。

The tunica externa also has nerve fibers, lymphatic vessels, and in the biggest vessels, the protein elastin.

外膜也有神经纤维、管，在最大血管中也有弹性蛋白。

Lymphatic capillaries are the smallest lymphatic vessels, and they're located throughout the interstitial space.

毛细管最小管，它们广泛分布于间质。

An early description of lymph nodes, small glands where lymphocytes cluster, was recorded by the Greek physician Hippocrates in the 5th century BCE, and Galen of Pergamum in the 2nd century CE wrote about lymphatic vessels.

早在公元前5世纪， 希腊医生希波克拉底就记录了对结早期描述，这些小腺体细胞聚集地方；到了公元2世纪， 帕加马盖伦则撰写了关于管内容。

But Wrench had a wretched lymphatic wife who made a mummy of herself indoors in a large shawl; and he must have altogether begun with an ill-chosen domestic apparatus.

但扳手有一个可怜管妻子，她在室内用一条大披巾把自己变成了木乃伊；他一定从一个选错了家用器具开始。

Well, that's the job of the microscopic lymphatic capillaries.

这显微镜下毛细管作用机制。

The right lymphatic duct is a short vessel that drains lymph from the right arm and the right side of the head and chest.

右管一个短小血管，从右臂和头部和胸部右侧排出。

1651. French scientist Jean Pequet highlights the role of the thoracic duct, the main lymphatic vessel.

1651年，法国科学家让·佩凯强调了胸导管——主要管作用。

As muscles that surround the lymphatic vessels contract and relax, the blood is milked through the vessels toward the heart, kind of like squeezing the bottom of a tube of toothpaste.

随着管周围肌肉收缩和放松，血液通过血管被挤向心脏，这就像挤压牙膏管底部一样。

After the lymph is picked up by the lymphatic capillaries, the capillaries converge into larger lymphatic vessels.

毛细血管吸收液后，毛细血管会聚成较大管。

Lymphatic capillaries are the smallest lymphatic vessels and collect fluid from the surrounding tissues.

毛细管最小管，从周围组织收集液体。

The microscopic lymphatic capillaries are the smallest lymphatic vessels and collect fluid from the surrounding tissues.

显微镜下毛细管最小管，从周围组织收集液体。

Therefore, we see that the larger lymphatic vessels contain one-way valves.

因此，我们看到较大管包含单向瓣。