The targets of the testosterone are the outermost cells in the tubules, called spermatogonia.

睾酮的目标是管中的细胞，称为精原细胞。

Usually, tau proteins support tiny tubes inside our axons called microtubules.

通常，tau蛋白要支撑称为微管即存在于轴突中的管。

These tubes focus almost exclusively on reabsorbing water back into the blood.

这部分管主要的作用就是重吸收水入血。

And this sperm-making work is supported by cells throughout and around the tubules.

这种精子制造工作是由遍布管及其周围的细胞支持的。

It contains microscopic, fluid-filled tubules that run from the pulp to the underside of the enamel.

它包含微的、充满液体的管，从髓一直到釉质下。

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

这些管是精子工厂，由围绕充满液体的中央管腔的分上皮组成。

It's called a cast because it stays in essentially the same cylindrical shape as the tubule.

它被称为管型，是因为它基本上与管保持相同的圆柱形状。

If your enamel is worn away, your dentin and its tubules can be exposed.

如果你的釉质被磨掉了，你的本质和它的管就会暴露出来。

ADH affects the last two-thirds of these tubes, called the distal convoluted tubule and the collecting ducts.

ADH作用于这些管的终末2/3部分，即管和集合管。

Cells have small tubes that assemble to help with cell division and DNA replication, then break back down.

细胞具有组装在一起的管以帮助细胞分裂和DNA复制，然后分解。

These are small tubes in your body.

这些是您体内的管。

But in this case, the sperm develop on the outer edge of the tubule, and progress inward toward the lumen.

但是在这种情况下，精子在管的缘发育，并向内腔前进。

" Veins" are the small tubes that blood moves through inside our bodies.

“静脉”是血液在我们体内流动的管。

I also love when the chickpeas find its way into one of the little tubes.

当鹰嘴豆进入其中一个管时，我也很喜欢。

These tubes though also allow fluids and electrolytes to move through the tube walls and back into the blood if needed.

如果身体需要，这些管同时也允许部分水和电解质穿过管壁回到血液循环中。

It's what creates tears and then it sends them through little tubes connected to the inside of your eyelid.

它会产生眼泪，然后将它们通过连接到眼睑内侧的管输送。

All this twisting might make the tubule look, like, super inefficient, but it actually serves an important purpose, as you might expect.

所有这些扭可能会让管看起来超级低效，但它实际上有一个重要的目的，正如你所料。

These tubules are important for sensory nerves as well, which use them to travel through the dentin from the pulp to the dentin-enamel junction.

本质中的管对感觉神经也很重要，因为感觉神经可以通过它们从髓到达本釉质交界处。

This is an ingenious retractor which is only five millimeters, and we can stick down the little tubes that can go safely in the abdomen.

这是一个巧妙的牵开器，只有 5 毫米，我们可以插入管，可以安全地进入腹部。

And then there's a luge, which is one person with a shorter little tube or sled, is the correct word, and they just do it by time.

然后有一个雪橇，这是一个人短的管或雪橇，是的，正确的话，他们只是按时间排名。