Organs of excretion

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  • ORGANS OF EXCRETION
    • LUNGS
      • What is excreted?
        • CO
        • Water
      • Why must it be excreted?
        • CO   is a poison
        • Water helps to lubricate our air ways
    • KIDNEYS
      • What is excreted?
        • Urea
          • Waste proteins
        • Water
        • Salt
      • Why must it be excreted?
        • Urea is waste proteins that would poison us
        • Water has to dilute the urea
        • Balances out salt levels
    • SKIN
      • What is excreted?
        • Salt
          • Sweat
        • Water
      • Why must it be excreted?
        • Water cools us down
          • Thermo-regulation

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