I'm telling you all of this now, up front, because hormones and neurotransmitters are 100% necessary for understanding how your sympathetic division ultimately works.

我现在提前告诉你所有这些，因为荷尔蒙和神经递质对于理解你的交感神经部门最终是如何工作的来说是 100% 必要的。

Unlike your sympathetic division, which lets you deal with the crisis of the now, the parasympathetic system allows your body to handle … everything else.

与你负责处理此刻危机的交感神经不同，副交感神经系统让你的身体得以处理… 其他一切事务。

We also know that the autonomic nervous system has two divisions: the sympathetic division (or fight-or-flight division) and the parasympathetic division.

我们也知道，植物神经系统有两个部分：交感神经分支（或战斗或逃跑分支）和副交感神经分支。

For example the sympathetic division, or the fight response, has its cell bodies in the thoracic and lumbar regions and make up the lateral horns of the grey matter.

比如交感神经系统，控制战逃反应；它的神经元胞体就位于脊髓胸腰段的灰质的脊髓侧角。

You may recall from our tour of the anatomy of your autonomic nervous system, that in both your sympathetic and parasympathetic divisions, almost every signal has to cross two synapses.

你可能还记得我们对你自主神经系统解剖的介绍，在你的交感神经和副交感神经部门，几乎每个信号都必须通过两个突触。