【英语时差8,16】关于肠道神经系统（下）

（单词翻译）

While this second brain is not nearly as complex as the brain in your head, it does have its own motor and sensory¹ neurons, and it uses many of the same brain chemicals and neurotransmitters. It even grows from the same part of the embryo² that your other brain grows from. What Does This Second Brain Do? Mostly, it coordinates³ the chemical and muscular activity of digestion–a process that’s actually quite complicated. It also responds to messages from your other brain–especially messages about fear or danger. If you get a stomach ache or diarrhea because of stress or fear, it’s this second brain that coordinates that. So the next time you put on your thinking cap, remember to put on a sweater as well!