These club cells secrete glycosaminoglycans which protect the bronchiolar epithelium.

棒状细胞分泌糖胺聚糖，来保护细支气管内膜。

It infects the epithelium of the respiratory mucosa, typically through a nasal route of transmission.

它通常通过鼻传播途径，感染呼吸道粘膜上皮。

Fatty acids and glycerol can easily pass through the small intestinal epithelium and into the lymphatics.

脂肪酸和甘油三酯都轻易穿过肠壁进入淋巴管。

These tubules are the sperm factories, made of a stratified epithelium surrounding a central fluid-filled lumen.

这些小管是精子工厂，由围绕充满液体的中央管腔的分层上皮组成。

These are little bones that come off the nose, they're called turbinates, lined with specialized sensory epithelium.

这些是从鼻子上脱的小骨头，它们被称为鼻甲，布有专门的感觉上皮。

First off, every time the epithelium and the underlying tissue is damaged, it's replaced by a scar.

首先，每次上皮和底层组织受损，都会被疤痕组织所取代。

A perforation becomes permanent when its edges are covered by squamous epithelium and it does not heal spontaneously.

当穿孔的边缘被鳞状上皮覆盖且动愈合时，穿孔就成为永久性的。

On the other hand, rhinoviruses commonly infect the epithelium of the respiratory mucosa, which lines the nasal cavity.

另一方面，鼻病毒通常会感染鼻腔周围的呼吸道粘膜上皮细胞。

Like the rest of the respiratory tract, the walls of the larynx are made up of mucosal epithelium.

和其它呼吸道上皮一样，喉的上皮也是黏膜上皮。

Squamous cell carcinoma, as you can tell by its name, arises from squamous epithelium.

鳞状细胞癌（鳞癌）正如其名，来源于鳞状上皮细胞。

So, adenocarcinoma arises from columnar glandular epithelium.

腺癌来源于柱状上皮腺体细胞。

There's the " proper" epithelium, which covers and lines your outer and inner body.

一个是“适当的”上皮，它覆盖并排列你的外身体和内身体。

Finally, at the lower esophageal sphincter, the squamous epithelium joins the columnar gastric epithelium to form the gastroesophageal junction.

最后，在食管下括约肌处，食管鳞状上皮移行为胃柱状上皮，形成了胃-食管交界区。

And then there is the glandular epithelium, which forms glands and secretes hormones and other substances.

然后是腺上皮，形成腺体并分泌激素和其他物质。

Your primary epithelium protects your whole body, inside and out.

你的初级上皮保护你的整个身体，从里到外。

So the epithelium of the gut is highly regenerative, right?

因此，肠道的上皮组织具有高度再力，对吧？

So its mucosa is made up of stratified squamous epithelium, which is better equipped to resist abrasion from food going down.

因此，其粘膜是由复层鳞状上皮构成的，较好地抵御食物对食管的磨损。

The first type of epithelium is called keratinized stratified squamous epithelium.

第一种上皮名叫角化复层鳞状上皮。

The downside is that this kind of epithelium doesn't have defense mechanisms, like the stomach - so it's more susceptible to acid damage.

缺点是这种上皮没有像胃那样的防御机制，所以它更容易受到酸的损害。

This causes the epithelium of the lower esophagus to constantly renew, and when it's replaced by columnar epithelium, that's called Barrett's esophagus.

这使得食管下段的上皮断更新，当其被柱状上皮取代时，叫做Barrett食管。