The liver and the kidneys

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Chapter topics:

  1. The liver and the kidneys
  2. The excretory system removes unwanted substances
  3. The urinary tract removes urine
  4. The functions of the kidneys
  5. The kidneys are part of the urinary system
  6. The functional unit of the kidney is the nephron
  7. Regulating urine excretion
  8. The liver is part of the digestive and excretory systems
  9. Summary

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