How do these bands of fibrotic tissue form though?

那么这些纤维束又是如何形成的呢？

And a fiber optic cable contains hundreds of these fiber strands.

一根光缆包含数百根这样的纤维束。

On the other hand, you can't easily rip a tendon or ligament in two, or even chew it, because it's made of that dense regular tissue, full of tight bundles of collagen fibers all running parallel.

另一方面，你不能轻易地将肌腱或韧带撕成，至不能咀嚼它，因为它是由致密的规则组织组成的，充满了紧密的胶原纤维束，它们都平行运行。