alleryStart learning →About how much air enters the lungs during one quiet breath?
AAbout 50 millilitres
BAbout 150 millilitres
CAbout 500 millilitres
DAbout 1500 millilitres
Answer & Solution
Correct answer: C. About 500 millilitres
1. The volume moved in one quiet breath is the tidal volume.
2. Tidal volume is about 500 millilitres.
3. So the third option is correct.
4. The larger figures belong to the reserve volumes, which are only recruited on deep or forced breaths.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 22 "The Respiratory System", section 22.3 The Process of Breathing_
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