IB Biology SL B3.1.6 Lung Volume Measurements Questions

Practise reading spirometry traces to identify tidal volume, calculate ventilation rate and vital capacity, then interpret minute ventilation and exercise data.

Exam points

Define tidal volume and ventilation rate, and identify spirometry or data logging as methods to monitor breathing.
Read spirometry traces to calculate tidal volume, ventilation rate and vital capacity with units.
Relate exercise intensity to changes in tidal volume, ventilation rate and total air inhaled per minute.

[Maximum number: 2]

(a)

The graph shows the changes that take place in the volume of the lungs and pressure in the alveoli during one breath at rest.

[ 2 ]

(i)

State the tidal volume in litres.

[ 1 ]

(ii)

Calculate the ventilation rate.

[ 1 ]

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

Question (a)

Question (i)

Question (ii)