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  2. Brain, Spinal Cord, and Nerve Disorders/
  3. Biology of the Nervous System/
    Biology of the Nervous System
    • Overview of the Nervous System
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      • Brain stem
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    • Nerves
      • Somatic nervous system
      • Autonomic nervous system
      • Cranial nerves and spinal nerves
    • Effects of Aging on the Nervous System
      • Brain
      • Spinal cord
      • Peripheral nerves
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