Edexcel IGCSE Biology 复习笔记 2.9.2 Excretion in Humans

Edexcel IGCSE Biology 复习笔记 2.9.2 Excretion in Humans

The Organs of Excretion

 

  • Humans have organs that are specialised for the removal of certain excretory products
  • Excretory organs of the human body include:
    • The kidneys for the excretion of urea, water and mineral ions
    • The lungs for the excretion of carbon dioxide and water
    • The skin for the excretion of excess mineral ions (e.g. sodium) and water
    • The liver for the breakdown of proteins (amino acids) into urea

     

 

Excretion-in-animals

 

Excretory organs of the human body

转载自savemyexam

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