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In anatomy/physiology, there are 2 major categorizations of the nervous system: Central nervous system (brain + spinal cord) and peripheral nervous system (all other neural structures) Somatic nervous system, which controls skeletal muscles and skin, and and autonomic n. system, which controls internal organs, blood vessels and glands and is further divided ...


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I guess the answer depends on what you mean with "connected more than once". Initially, being connected is a strictly binary relation: either two neurons are connected or not. (The question may be: directly or not. Indirectly, each pair of neurons is connected, as I assume.) If you consider "being connected more or less strongly" - which is not a binary ...


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