Our second brain is the brain in our gut or the ENS (the enteric nervous system).

我们的第二大脑是我们肠道或肠神经系统中的大脑。

Through this network of nerve connections, your big brain communicates stress to your enteric, or intestinal nervous system.

通过这个系统中神经纤维间的联系，你的大脑向你的肠道，或者说肠神经系统传递了压力的信号。

Isn't it called the enteric nervous system?

不是叫肠神经系统吗？

Research suggests that this network, known as the enteric nervous system, contains more than 100m neurons.

研究表明，这个被称为肠神经系统的网络包含超过 100m 个神经元。

When the vagus nerve is severed, the enteric nervous system is capable of organizing and initiating its own reflexes for digestion because it has such a complex collection of neurons.

当迷走神经被切断时，因其有如此复杂的神经元集合，肠道神经系统有能力组织和启动自己的消化反射。

In fact, there is a brain of sorts in your belly called the enteric nervous system which performs everything from sensing nutrients, measuring acids, and coordinating the immune system to defend your gut.

事实上，在你的肚子里有一个肠道神经系统，它可以感知营养、测量酸度、协调免疫系统来保护你的肠道。

But while this extensive network is constantly sending signals from the brain to your body, scientists have noted that 80-90% of the nerve fibers in the enteric nervous system are actually going from the gut to the brain.

但是，当这个大规模的网络不断地从大脑向身体发送信号时，科学家们注意到，肠道神经系统中80-90%的神经纤维实际上是从肠道到大脑的。