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what nervous system is the brain and spinal cord in what part of the nervous system is the brain and spinal cord in what nervous system is the brain and spinal cord apart of what nervous system includes the brain and spinal cord what nervous system includes the brain and spinal cord only what nervous system is composed of the brain and spinal cord what nervous system is comprised of the brain and spinal cord what type of nervous system is the brain and spinal cord what system is the brain spinal cord and nerves in what nervous system does the brain and spinal cord belong to
