The brain is the chief organ of the nervous system. The nervous system is quite complex. The brain, the skin, the muscles, there's not a single. Thanks to it, we can perform all our daily.
The brain, the skin, the muscles, there's not a single. The brain is the chief organ of the nervous system. Thanks to it, we can perform all our daily. The nervous system is quite complex. The brain, the skin, the muscles, there's not a single.
