Biology 5090 · O Level · Human gas exchange

Human gas exchange — practice question

The diagram illustrates a section of the human gas exchange system. What are the labelled structures?

  • Alarynx 1; trachea 2; bronchus 3; bronchiole 4
  • Blarynx 2; trachea 1; bronchus 3; bronchiole 4
  • Clarynx 1; trachea 2; bronchus 4; bronchiole 3
  • Dlarynx 2; trachea 1; bronchus 4; bronchiole 3

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