What is the capacity of each lung?
3L (total capacity of 6L)
What is the size of a typical breath?
How full are lungs at the end of a normal breath?
What is the volume of air that cannot be voluntarily shifted called?
How large is residual volume?
What is residual volume needed for?
Stop alveoli from collapsing and for gas exchange to take place between breaths
How much gas is in anatomical dead space?
What is tidal volume?
A normal breath, 500ml
What is the volume of air breathed in or out of the lungs at each breath called?
Tidal volume, TV
What is expiratory reserve volume, ERV?
Maximum volume of air which can be expelled from the lungs at the end of a normal expiration
What is the maximum volume of air which can be expelled from the lungs at the end of normal expiration called?
Expiratory reserve volume, ERV
What is inspiratory reserve volume, IRV?
Maximum volume of air which can be drawn into the lungs at the end of a normal inspiration
What is the maximum volume of air which can be drawn into the lungs at the end of a normal inspiration called?
Inspiratory reserve volume, IRV
What is residual volume, RV?
Volume of gas in the lungs at the end of a maximal expiration
What is the volume of air in the lungs at the end of a maximal expiration called?
Residual volume, RV
What is vital capacity, VC?
Total volume + inspiratory reserve volume + expiratory reserve volume
What does total volume + inspiratory reserve volume + expiratory reserve volume make?
Vital capacity, VC
What is total lung capacity, TLC?
Vital capacity + residual volume
What does vital capacity + residual volume make?
Total lung capacity, TLC
What is inspiratory capacity, IC?
Tidal volume + inspiratory reserve volume
What does tidal volume and inspiratory reserve volume make?
Inspiratory capacity, IC
What is functional residual capacity, FRC?
Expiratory reserve volume + residual volume
What does expiratory reserve volume + residual volume make?
Functional residual capacity, FRC
What is FEV1?
Forced expired volume in 1 second
What is the forced expired volume in 1 second called?
What is FEV1:FVC?
Fraction of forced vital capacity expired in 1 second
What is ventilation?
Movement of air in and out of the lungs
What are the 2 kinds of ventilation?
Pulmonary (minute) ventilation
What is pulmonary (minute) inspiration?
Total air movement into/out of lungs
What is alveolar ventilation?
Fresh air getting to alveoli and available for gas exchange