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Biology journal Cambridge IGCSE 0610

Topic 13 of 21 · 1 modules planned

Excretion in humans

How the lungs, liver and kidneys remove the waste products of metabolism.

Modules

  1. Module 1 · syllabus 13.1

    Excretion and the kidneys

    How do your kidneys clean your blood?

    This module is planned. It will have readings, an experiment, practice with self-checks and a final check.

Syllabus statements for this topic · for teachers · 9 statements

Core for every pupil · Supplement also for Extended entry. Paraphrased from the Cambridge IGCSE Biology 0610 syllabus (2026–2028); check the official syllabus for exact wording.

13.1 Excretion in humans

  • 13.1.1Lungs excrete carbon dioxideC
  • 13.1.2Kidneys excrete urea, excess water and ionsC
  • 13.1.3Identify kidneys, ureters, bladder and urethraC
  • 13.1.4Kidney cortex and medullaS
  • 13.1.5Nephron: filtration, reabsorption, urine formationS
  • 13.1.6Liver converts amino acids to proteinsS
  • 13.1.7Urea made in the liver from excess amino acidsS
  • 13.1.8Deamination forms ureaS
  • 13.1.9Excretion matters because urea is toxicS