QuestionSBA
QuestionChoice
This is representative of the total lung capacity. Total lung capacity = residual volume + vital capacity.
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b
4.5L
QuestionChoice
This is representative of the vital capacity, which is the maximum air expelled after maximum inspiration. Vital capacity = expiratory reserve volume + inspiratory reserve capacity + tidal volume.
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a
3.9L
QuestionChoice
This is representative of residual volume, which is the air remaining in the lungs after maximum expiration to prevent lung collapse. Residual volume = functional residual capacity - expiratory reserve volume.
10006554
d
0.6L
QuestionChoice
This is representative of inspiratory capacity, which is the maximum air inhaled after normal tidal expiration. Inspiratory capacity = inspiratory reserve volume + tidal volume.
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c
2.5L
QuestionChoice
This is just the tidal volume, which is the volume inhaled or exhaled in a normal breath, and is combined with the inspiratory and expiratory reserve volumes to calculate the vital capacity
10006555
e
0.4L
Concept
Chapter
2693
4212
Lung volumes
Topic
150
Respiratory physiology
13857
A 30-year-old woman undergoes spirometry and gas dilution to measure her lung capacity due to concerns about her breathing. Her results are below:
- Inspiratory reserve volume = 2.1L

- Expiratory reserve volume = 1.4L

- Tidal volume = 0.4L

- Functional residual capacity = 2.0L

What is her vital capacity?
a