Some ribosomes float free in the cytoplasm, while others are attached to the endoplasmic reticulum.

一些核游离于细胞质中，而另一些则附着在内质网上。

The endoplasmic reticulum helps transport proteins made by the ribosomes to the Golgi apparatus.

内质网会将核合成的蛋白质运到高。

And so that's a common characteristic, this endomembrane system of all eukaryotic cells.

因此，这是所有真核细胞的一个共同特征，即内质网系统。

Well they came from the ER.

它们来自内质网。

The one that I want to talk about more specifically is called endoplasmic reticulum.

我特别想谈论的是内质网。

Endoplasmic reticulum has two different parts to it.

内质网有两个不同的部分。

There can be as many as 10 million ribosomes in a human cell, all studded along a ribbon-like structure, called the endoplasmic reticulum.

人类的细胞可能有多达千万个核，着一个带状结构排列，这个带状结构称为内质网。

It can bind to specific receptors found on mitochondria and endoplasmic reticula, and may even have the potential to kill certain cancerous cells.

它可以与从线粒和内质网上发现的特定受结合，甚至有可能杀死某些癌细胞。

This right here would be the rough endoplasmic reticulum.

这右边的就是粗面内质网。

And then this would be smooth endoplasmic reticulum.

然后这就是光滑内质网。

And so what does the rough endoplasmic reticulum do?

糙面内质网的功能是什么？

Those cells absorb all of the building blocks of milk, then synthesize tiny droplets of fat on structures called smooth endoplasmic reticula.

这些细胞吸收了牛奶的所有本成分，然后在称为平滑内质网的结构上合成微小的脂肪滴。

And so endoplasmic reticulum is just one organelle inside eukaryotic cells.

内质网只是真核细胞内的一种细胞器。

Example of one thing that does both of these is the endoplasmic reticulum.

一个既能实现这一点又能实现那一点的例子是内质网。

Misfolded alpha-1 antitrypsin can aggregate and get stuck in the endoplasmic reticulum of the liver hepatocytes where it's made, causing some of those cells to die.

错误折叠的α-1抗胰蛋白酶可聚集并阻塞于肝细胞内质网中，即α-1抗胰蛋白酶产生的地方，导致其中一部分肝细胞死亡。

In addition, most of the intracellular calcium is stored within organelles like the mitochondria and smooth endoplasmic reticulum and is released selectively just when it's needed.

另外，大多数的细胞内钙储存在细胞器中，比如线粒、光面内质网，当需要的时候，它们会被选择性地释放。

Well in general it takes information that's produced in the endoplasmic reticulum and then it shifts those to different parts of the cell.

总的来说，它会把内质网产生的信息转移到细胞的不同部分。

Material is made in the endoplasmic reticulum.

质在内质网中被制造。

But function of the ER is to kind of give us a lattice so we can build things.

内质网的功能是为我们提供一个框架，使我们能够在此础上构建各种结构。

That's definitely going to be the endoplasmic reticulum.

那肯定是内质网。