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Tidal volume (TV)
air moved during one normal relaxed breath
Inspiratory reserve volume (IRV)
extra air forcefully inhaled after normal inhalation
Expiratory reserve volume (ERV)
extra air forcefully exhaled after normal exhalation
Residual volume (RV)
air left after forced exhalation
Inspiratory capacity (IC)
volume inhaled after normal exhalation
Functional residual capacity (FRC)
air left after normal exhalation
Vital capacity (VC)
air exhaled after maximum inhalation and equals TV + IRV + ERV
Total lung capacity (TLC)
air in the lungs after maximal inhalation
Respiratory rate
breaths per minute and a vital sign
Newborn respiratory rate
30–60 breaths per minute
1-year-old respiratory rate
18–30 breaths per minute
16-year-old respiratory rate
16–20 breaths per minute
Adult respiratory rate
12–20 breaths per minute
CO₂ and breathing
increased blood CO₂ increases breathing to expel CO₂ as described in the slide