Lung volumes and lung capacities refer to the volume of air in the lungs at different phases of the respiratory cycle. The average total lung capacity of an adult human male is about 6 litres of air Standard errors in prediction equations for residual volume have been measured at 579 ml for men and 355 ml for women, while.
At birth, females have smaller lungs than males with fewer respiratory bronchioles . parts of an organ that allows normal physiological function of the whole . females are characterised by smaller ratios at a given size than adult males.
The volume of adult female lungs is typically 10-12% smaller than that of male and 19 normal female subjects at three different lung volumes.