Biology 0610 · IGCSE · Gas exchange in humans

Gas exchange in humans — practice question

The diagram illustrates the breathing system. Which structures have been labelled?

  • A1 bronchus, 2 diaphragm, 3 trachea
  • B1 diaphragm, 2 bronchus, 3 trachea
  • C1 trachea, 2 bronchus, 3 diaphragm
  • D1 trachea, 2 diaphragm, 3 bronchus

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