Cambridge IGCSE Biology, topic 13
Excretion in humans
Excretion is the removal of the waste products of metabolism and substances in excess of requirements. This topic covers the organs that excrete carbon dioxide, urea, excess water and excess ions, how the kidney filters blood and forms urine, and how the liver forms urea from excess amino acids.
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- 1Excretion in humans Spec 13.1Excretion of carbon dioxide, urea, water and ions; the urinary system, the nephron, and the liver's role in forming urea.NotesQuestions 7Flashcards 13
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