They basically are the endothelium, the inside lining of the blood vessel floating around.

它们基本上是内皮，漂浮在周围的血管的内层。

Cortisol can also cause the endothelium, or inner lining of blood vessels, to not function normally.

压力荷尔蒙皮质醇会令你的内循环或血管中的内覆组织无法正常运行。

The first way is called the extrinsic pathway, which starts when tissue factor gets exposed by the injury of the endothelium.

第一种是外源性凝血途径由组织因子暴露于血管壁损伤处后启动。

It also releases Sphingomyelinase C toxin, which destroys red blood cells as well as the endothelium of the capillaries, causing hemorrhage.

它也能释放出鞘磷脂酶C，破坏红细胞和血管内皮细胞，从而导致出血。

During stasis, platelets and other clotting factors contact the endothelium, and prolonged interaction leads to clotting factor adhesion, and, ultimately, activation of the clotting cascade.

当血流瘀滞发生时，血小板、其他凝血因子、内皮细胞长时间的互相作用，最终导致凝血级联反应的激活。

After that, some platelets adhere to the damaged vessel wall, and become activated by collagen and tissue factor, proteins which are normally kept separated from the blood by an intact endothelium.

接着，血小板粘附至损伤的血管壁，并且被胶原和组织因子活化；这些蛋白质平常由完好的血管壁与血液隔离。

Finally, there's the innermost layer of the heart called the endocardium, which is made of a relatively thin layer of endothelium which is the same layer of cells that line the blood vessels.

最后，心脏的最内层叫心内膜，由一层较薄的内皮细胞构成；与位在血管内壁的是同一层细胞。

Normally, after a cut and damage to the endothelium, or inner lining of blood vessel walls, there's an immediate vasoconstriction or narrowing of the blood vessel which limits the amount of blood flow.

正常情况下，血管壁内层的内皮细胞受到损伤后，血管会立刻收缩变窄，减少血流量。

The cool thing about this layer is that it contains the endothelium, which you may remember is made up of simple squamous epithelium tissue and is continuous with the lining of the heart.

这层最酷的地方是它包含内皮，你可能记得内皮是由简单的鳞状上皮组织组成的，并且与心脏内膜连续。

Normally, the process starts with damage to the endothelium, or inner lining of blood vessel walls, after which there's an immediate vasoconstriction or narrowing of the blood vessel which limits the amount of blood flow.

通常，这一过程开始于血管内皮损伤，之后立即发生血管收缩，或者说通过收缩血管来限制血流量。