it was found that : ( 1 ) in comparison to terrestrial mammals the lung volume relative to body weight is large , ( 2 ) the lungs are capable of emptying to less than 17 % of total lung capacity , ( 3 ) peak expiratory flowrates of 5 to 10 vital capacities ( vc ) .sec-1 are relatively high for mammals , ( 4 ) isovolume pressure flow curves showed a clustering of flowrate plateaus from 40 to 80 % vc , with a marked drop in the flow rate plateau at 20 % vc , ( 5 ) the profile of flow-volume curves is unusually square shaped with flows remaining above 2 vc.sec-1 at a lung volume of 20 % vc , ( 6 ) this feature is responsible for the short emptying time of less than 0.2 sec .
C0005910
body weight
C1521970
feature