IB Biology HL B3.1.6 Lung Volume Measurements Questions

Practise reading spirometry traces to identify tidal volume and ventilation rate, then use the full forced-breath trace to determine vital capacity.

Exam points

Identify a spirometer as an instrument for measuring tidal volume and lung capacity.
Read normal-breathing traces to identify tidal volume and calculate ventilation rate with units.
Determine vital capacity from the difference between maximum and minimum volumes on a forced-breath trace.

[Maximum number: 1]

Measurements of the lung capacity of a student were recorded using a spirometer and displayed with a data logger. Initially the student was at rest, then changed to carrying out strenuous exercise. The results are displayed in the graph.

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Calculate the ventilation rate at rest, giving the units.

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IB Biology HL B3.1.6 Lung Volume Measurements Questions question 1