sentences: wire are made of sloth positive & the nervous example contains converts ->  the nervous system contains nerve cells  the nervous system contains nerve cells & star substances north reply in the mind ->  the nervous system conducts messages in the body  the nervous system conducts messages in the body & reply in the mind are cells in the relation of electrical adaptation ->  the nervous system conducts observations in the form of electrical signals in the body  the nervous system conducts observations in the form of electrical signals in the body & something that dating electricty can send developing nowhere ->  the nervous system sends observations in the form of electrical signals to the rest of the body  the nervous system sends observations in the form of electrical signals to the rest of the body & a mind stage is a whole of the mind -> the nervous system sends electrical signals to the other body systems