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what body system is the spinal cord part of what organ system is the spinal cord part of what body system is the spinal cord apart of what body system is the cerebrum part of what body system is the spinal cord in what organ system is the spinal cord apart of what body system is the spinal cord located in what organ system is the spinal cord in what body system is the spinal column in which body system the brain and spinal cord are part of
