Biology 0610 · IGCSE · Gas exchange in humans

Gas exchange in humans — practice question

What route does carbon dioxide take as it leaves the lungs?

  • Aalveolus → bronchiole → bronchus → trachea
  • Balveolus → bronchus → bronchiole → trachea
  • Ctrachea → bronchiole → bronchus → alveolus
  • Dtrachea → bronchus → bronchiole → alveolus

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