They're craniosacral, meaning they sprout from the base of your brain and also from your sacral spinal cord, just superior to the tailbone.

它们是颅骶骨，这意味着它们从你的大脑底部发芽，也从你的骶骨脊髓发芽，只是优于尾骨。

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。