The Autonomic system consists of the sympathetic and the parasympathetic divisions.

自主神经系统由交感神经和副交感神经两部分组成。

This happens thanks to the parasympathetic division of the autonomic nervous system.

这要归功于自主神经系统的副交感神经分支。

While the sympathetic nerves all spring from the thoracolumbar area of your spinal cord, right around your midsection, the nerves of the parasympathetic division are craniosacral.

交感神经都是从你的脊髓胸腰区放射，就在你的腹部附近，副交感神经区域则是位于颅骶。

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。

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。