QuestionSBA
QuestionChoice
Residual volume is the volume of air remaining in the lungs after maximum forceful expiration. This air cannot be expelled from the lungs; otherwise, the alveoli would collapse.
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c
Residual volume
QuestionChoice
Vital capacity is the maximal volume of air that can be exhaled following maximum inspiration. It is usually measured from the highest peak to the lowest trough on the graph.
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a
Vital capacity
QuestionChoice
Inspiratory capacity is the amount of air that can be inhaled after the end of a normal expiration. It can be worked out by combining the tidal volume and the inspiratory reserve volume.
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d
Inspiratory capacity
QuestionChoice
Tidal volume is the amount of air that moves in or out of the lungs with each respiratory cycle and is usually around 500ml.
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b
Tidal volume
QuestionChoice
Expiratory reserve volume is the reserve amount of air that can be exhaled forcefully after passive exhalation.
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e
Expiratory reserve volume
Concept
Chapter
2693
3726
Spirometry
Topic
132
Respiratory
17131
A 24-year-old female is undergoing spirometry for her asthma to assess how well-controlled it is. The doctor explains to the patient what each of the lines on the graph means.

As part of the test, the doctor asks the patient to take in the deepest breath that she can and then blow out as much air as she can.

What is the name given to this volume of air on the spirometry graph?
a