Lung volumes and capacities Flashcards
about 500 mL, is the amount of air inspired during normal, relaxed breathing.
The tidal volume (TV),
about 3,100 mL, is the additional air that can be forcibly inhaled after the inspiration of a normal tidal volume.
The inspiratory reserve volume (IRV),
about 1,200 mL, is the additional air that can be forcibly exhaled after the expiration of a normal tidal volume.
The expiratory reserve volume (ERV),
about 1,200 mL, is the volume of air still remaining in the lungs after the expiratory reserve volume is exhaled
Residual volume (RV),
about 6,000 mL, is the maximum amount of air that can fill the lungs
The total lung capacity (TLC)= TV + IRV + ERV + RV)
about 4,800 mL, is the total amount of air that can be expired after fully inhaling The value varies according to age and body size.
he vital capacity (VC), (VC = TV + IRV + ERV = approximately 80 percent TLC).
about 3,600 mL, is the maximum amount of air that can be inspired
The inspiratory capacity (IC), (IC = TV + IRV).
about 2,400 mL, is the amount of air remaining in the lungs after a normal expiration
The functional residual capacity (FRC), FRC = RV + ERV).
