tidal volume: volume of air that moves into and out of the lungs with each resting breath
residual volume: volume of air that is left in your lungs when you have exhaled as hard as possible
vital capacity: maximum volume of air that can be exhaled after a maximal inspiratory effort
inspiratory reserve volume: volume of air that can be breathed in when the strongest possible exhalation is followed by the deepest possible intake of breath
expiratory reserve volume: extra amount of air you can force out of your lungs over and above the normal tidal volume of air you breath out
total lung capacity: sum of the vital capacity and the residual volume
how does the soda-lime canister help in spirometry?
removes CO2 so CO2 levels don't change and the uptake of O2 is easier
how does a nose clip help in spirometry?
breathing only through air tubes of spirometer so trace reflects the true volume of gas breathed in and out
