Have in common so the placebo effect for example where you can take a drug thats completely in or it completely has nothing active in it but you think its going to make you better and it does the socalled perceive perfect that has to work in conjunction the Central Nervous system has to work in conjunction with the immune system and the endocrine system hormones because otherwise youd have biological amoco if they were separate so there has to be a system for the brain in the body to be really integrated in the brain after all is just another organ of the body very important organ a very greedy organ in terms of energy but nonetheless it is an integral part of your body its not as if its a separate or machine thats perched on top of the body directing like a little rover and of course not you have these chemicals are iterating throughout your body from the great control systems of blood in the streets the Central Nervous system the endocrine system and the autonomic nervous system whic