Multiple Choice
Which lung capacity is calculated by adding tidal volume and inspiratory reserve volume?
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22. The Respiratory System
Lung Volumes and Capacities
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Which statement best describes tidal volume?
A
The volume of air remaining in the lungs after a normal exhalation.
B
The maximum volume of air that can be exhaled after a maximum inhalation.
C
The total volume of air the lungs can hold.
D
The volume of air inhaled or exhaled during a normal breath.
Verified step by step guidance1
Understand the concept of tidal volume: Tidal volume is the amount of air that is inhaled or exhaled during a normal breath when at rest.
Differentiate tidal volume from other lung volumes: Tidal volume is distinct from other measurements such as residual volume, vital capacity, and total lung capacity.
Residual volume refers to the air remaining in the lungs after a normal exhalation, which is not the same as tidal volume.
Vital capacity is the maximum volume of air that can be exhaled after a maximum inhalation, which is different from tidal volume.
Total lung capacity is the total volume of air the lungs can hold, encompassing all lung volumes, including tidal volume.
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