Biology 9700 · AS & A Level · The gas exchange system

The gas exchange system — practice question

This photomicrograph displays a cross-section of lung tissue. Which structures can be seen in this photomicrograph?

  • Aartery: ✓, vein: ✓, bronchioles: ✗, bronchus: ✓, trachea: ✗
  • Bartery: ✓, vein: ✗, bronchioles: ✓, bronchus: ✗, trachea: ✓
  • Cartery: ✗, vein: ✓, bronchioles: ✓, bronchus: ✓, trachea: ✗
  • Dartery: ✗, vein: ✗, bronchioles: ✗, bronchus: ✓, trachea: ✓

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