And reflex arcs stimulate some muscles, while inhibiting others.

反射弧刺激一些肌肉，同时抑制其他肌肉。

If triggered by an over-stretch, they generate a reflex arc that contracts the muscle to keep it from stretching further.

如果被过度拉伸触发，它们会产生反射弧，收缩肌肉以防止其进一步拉伸。

Those are the five steps that your highly specific neural pathways go through to produce what's known as a reflex arc.

这是你高度特异的神经通路产生反射弧的五个步骤。

This sets off a reflex arc called the micturition reflex which causes contraction of the bladder and relaxation of the internal sphincter and external sphincter.

这就触发了一个反射弧，叫做排尿反射，导致膀胱收缩、尿道内外括约肌扩张。

You learned about the five steps of the reflex arc, the different kinds of reflexes you have, and what your brain has to say about all that pain, once the news is finally broken to it.

你了解了反射弧的五个步骤，一旦消息被传递出去，你会有不同种类的反射，以及你的大脑对所有这些疼痛的看法。