Her heart-- pretty much just a bunch of muscle fiber.

她的心脏，基本上就是一堆肌肉纤了。

Sineu is the connective tissue that is connecting the muscle fibers.

这些纹路是连接肌肉纤的结缔组织。

So there is one unique cell in particular which has muscles fibers there.

特别是有一种独特的细胞，它里面含有肌纤。

The first two, shortening muscle fibers and lengthening them, generate opposing forces.

前两种包括收缩型肌肉纤和伸长型肌肉纤，彼此会产生相对的作用力。

In these cases, the muscle fibers don't change in length, but instead keep the muscles rigid.

在这些情况之下，肌肉纤的长度保持不变，而整肌肉处于一种僵硬的状态。

Without proper nutrition, hormones, and rest, your body would never be able to repair damaged muscle fibers.

没有所需的营养，激素，和休息，你的身体永远不能修复受损的肌肉组织。

And they got these little serrations down the front and the back that tear through the muscle fibers.

牙齿前后都有这些小锯齿能肌肉纤。

We've also learned that along with motor neurons and muscle fibers, ALS could involve other cell types.

我们还了解到连同运动神经元和肌肉纤，ALS可能还会涉及其他细胞类型。

Only one-tenth the width of a human hair, the fibers were both stronger and tougher than actual muscle fibers.

宽度只有人类头发的1/10，这种纤比实际的肌肉纤更坚韧。

Those neurons then transmit the message into muscle fibers, which contract or relax in response, resulting in motion.

这些神经元随后将信息传输到肌肉纤中，这些纤会收缩或放松，从而产生运动。

Or at least we assume that this is tastier than the muscle fiber clothing...We're going to talk about chocolate.

我们看来它至少比肌肉纤衣物更好吃… … 我们要谈一谈巧克力。

So, contractions intensify as your motor neurons stimulate more and more muscle fibers.

所以，当你的运动神经元刺激越来越多的肌肉纤时，收缩会加剧。

Meat from butchered animals, which we'll call farmed meat, is a complex structure of muscle fibers, connective tissues, and fat.

来自屠宰动物的肉类，我们称之为“养殖肉”，这种肉类是由肌肉纤、结缔组织和脂肪组成的复杂结构。

This muscle group also contains two types of muscle fibers to refine our motions even further, slow-twitch and fast-twitch.

这种肌肉组也包含两种肌肉纤，以慢转换和快转换的方式进一步改善我们的活动。

Now, remember those tiny myofibrils that bundle up to form your muscle fibers?

现在，还记得那些微小的肌原纤捆绑形成你的肌肉纤吗？

It blocks motor neurons from affecting muscle fibers.

它阻止运动神经元影响肌肉纤。

From a tyrannosaur we have the remains of muscle fibers.

我们从霸王龙那里得到了肌肉纤的遗骸。

So keep those rules in mind, while we see how a muscle fiber contracts and relaxes.

因此，当我们看到肌肉纤如何收缩和放松时，请记住这些规则。

A motor unit is a group of muscle fibers that all get their signals from the same, single motor neuron.

运动单元是一组肌肉纤，它们都从同一运动神经元接收信号。

By bending in the middle and using fast twitch muscle fibers, they can whip around without ever changing their net angular momentum.

透过在身体中断弯曲并使用快肌纤，它们可以在不改变其净角动量的情况下摆动。