Maybe you don't know: Our bodies have two brains!

Even the second has its own "feelings".

The intestinal system actually has its own 'mind'. In our skull, in addition to the gray matter, there is also a 'second brain' for the gastrointestinal tract. Scientists have documented a completely new type of neuron model and its direct effects on the intestinal tract.

"The second brain" is scientifically known as the sympathetic nervous system. It is basically a complex network around the gastrointestinal tract, with about 400 million neurons, dozens of different types of neurotransmitters, acting as chemical transmitters. This is the peripheral nervous system with the largest number of neurons outside the brain. It can act almost independently of the central nervous system of the brain. Although the sympathetic nervous system has a connection to the "main brain" as nerve 10, but even if you cut off this wire 10, the sympathetic nervous system will continue to function. normal action.

The sympathetic nervous system is not involved and does not affect people's consciousness. It will not control what you will choose to eat for breakfast, lunch and dinner. Its main job is regulating and controlling the activity of the digestive system.

An article published in JNeurosci shows that Australian scientists have made a big leap in building a neuronal response pattern in mice, a model that has never appeared before.

The researchers emphasize the strange shape of a really "rhythmic" nerve wave with intestinal contraction. As a result, stool is pushed through the large intestine and out. The new discovery is described as a "previously unknown neuronal activity model".

They said: 'The activity of the sympathetic nervous system is capable of simultaneously acting on the utopian length of the intestine, at the same time.'

In short, the "second brain" still contains many mysteries. The more scientists learn about it, the more complex and attractive it becomes. There have been studies of the influence of sympathetic nervous system on human state and emotions. More than 90% of the body's serotonin, neurotransmitters for 'sublimation emotions', are produced in the intestine. What's more interesting is the evidence that the sympathetic nervous system actually develops before the brain and central nervous system in the fetus.