But where these cells join end-to-end you can see darker striations.

但是在这些细胞首尾相连地方你可以看到更暗条纹。

It's called smooth because, as you can see, unlike the other two, it lacks striation.

被称为光滑是因为，正如你所看到，与其他两个不，有条纹。

It looks kind of clean and smooth, with obvious striations that resemble little pinstripes.

看起来干净光滑，有明显条纹，类似于小针条纹。

And, we can see these striations where the muscles attach to the bone, itself.

且，我们可以看到肌肉附着在骨骼上这些条纹。

Leaving us with an easy one — long, and straight cells with obvious striations AND multiple nuclei. This could only be skeletal muscle tissue.

剩下一个简单——长细胞，有明显条纹和多个细胞核。这可能只是骨骼肌组织。

These striations are caused by the arrangement of the protein molecules within the fibers that produce shortening or contraction of the fiber.

这些横纹是由纤维内使其收缩蛋白质分子排列形成。

See if you can match the following tissue stains with their corresponding muscle tissue types. Don't forget to pay attention to striations and cell-shape!

看看你是否能将下面组织染色与其对应肌肉组织类型相匹配。别忘了注意条纹和细胞形状！

Or these — they're uninucleate cells, too, and they also are packed together pretty closely together. But… no striations. They're smooth, so this is smooth muscle.

或者这些——们也是单核细胞，们也紧密地挤在一起。但是… … 有条纹。们很光滑，所以这是平滑肌。

The lemon melon has the usual round shape of a melon, but its rind lacks the characteristic stripes and striation of a melon, and has white flesh.

柠檬瓜与其他瓜类一样是圆形，但其果皮有典型纹路，果肉是白色。

Skeletal muscle is also termed voluntary striated muscles. The name " striated" comes from the characteristic cross striations of the muscle fibers when viewed under a microscope.

骨骼肌也称为随意横纹肌。当在显微镜下观察时，肌纤维上可见特征性横纹，" 横纹肌" 名称就来源于此。

The lemon melon has the usual round shape of a melon, but its rind lacks the characteristic stripes and striations of a melon, and has white flesh.

柠檬西瓜和普通西瓜一样是圆形，但是外皮有西瓜标志性条纹，果肉呈白色。

It is usually found as a sheath of muscle fibers surrounding a tube-like structure. When viewed from a microscope, there is no striation presented in the muscle, so it is called involuntary nonstriated muscle.

通常作为围绕管样结构肌纤维鞘存在。用显微镜观察时，肌肉上并不存在横纹，所以被称为非随意无横纹肌。

Like skeletal muscle fibers, cardiac muscle cells have striations. Like smooth muscle fibers, each cardiac muscle cell has only one nucleus and its contraction and relaxation are not under conscious control. Therefore, it is also called involuntary striated muscle.

像骨骼肌纤维一样，心肌细胞也有条纹。像平滑肌纤维一样，每个心肌细胞只有一个核且其收缩和舒张不受意识控制。因此，也被称为非随意横纹肌。