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

一些核糖体游离于细胞质中，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.

内质网会将核糖体合白质运到高尔基体。

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

因此，这是所有真核细胞一个共同特征，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.

我特别想谈论是内质网。

Endoplasmic reticulum has two different parts to it.

内质网有两个不同部分。

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

人类细胞可能有多达千万个核糖体，沿着一个带状列，这个带状称为内质网。

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

它可以与从线粒体和内质网上发现特定受体合，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所有基本分，然后在称为平滑内质网上合微小脂肪滴。

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

内质网只是真核细胞内一种细胞器。

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α-1抗胰白酶可聚集并阻塞于肝细胞内质网中，即α-1抗胰白酶产生地方，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，大多数细胞内钙储存在细胞器中，比如线粒体、光面内质网，当需要时候，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.

总来说，它会把内质网产生信息转移到细胞不同部分。

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.

内质网功能是为我们提供一个框架，使我们能够在此基础上建各种。

That's definitely going to be the endoplasmic reticulum.

那肯定是内质网。