The subject's TV is _________ml. (note: give them volume in ml, to the nearest 100 ml.)The subject's IRV is _________L. (note: give them volume in liters, to the nearest 0.1 L)The subject's VC is _________L. (note: give them volume in liters, to the nearest 0.1 L)The subject's PEF is _________L/min. (note: give them volume in liters/min, to the nearest 10 L/min) Statistics for: Latest | Volumemin: -0.009837 at 4.190 max: 3.480 at 8.310mean: 1.006 median: 0.3816std. dev: 1.205 samples: 417Ду: 3.490Volume vs. TimeStatistics for: Latest | Volumemin: -1.537 at 11.93 max: 3.480 at 8.310mean: -0.5558 median: -1.223std. dev: 1.445 samples: 364Ay: 5.017Statistics for: Latest | Volumemin: -0.01773 at 2.030 max: 0.0.1969 median: 0.20690.39399 at 3.070mean: 0.1std. dev: 0.1472 samples: 116Ay: 0.4120-Statistics for: Latest | Volumemin: -1.537 at 11.93 max: -0.02556 at 9.030mean: -1.227 median: -1.374std. dev: 0.3621 samples: 320Ду: 1.512101520(At:1.15 Ay:0.011)Time (s)Volume (L) 10-101520Time (s)Flow Rate (L/s)

Respiratory system of humans is composed of lungs, nose, mouth, airways, etc. It is the complex system that deals with the exchange of oxygen and carbon dioxide gases with the surrounding. Pulmonary function tests are diagnostic tests that are noninvasive in nature. It is used to test how well the respiratory system functions. Tidal volume (TV) is the volume of air inspired or expired. From the given graph, tidal volume is the maximum peak of the first three waves. Hence the tidal volume of the subject is 0.393 L, which can be rounded off to 400 ml. Vital capacity is the maximum air expelled after maximum inhalation. It represents the biggest wave in the graph. Its value is the amplitude of the largest wave. i.e. It can be approximated as 3.5 L. Expiratory Reserve volume is the additional volume that can be forcefully exhaled after normal tidal respiration. From the graph, it is the trough of the vital capacity. i.e. 0.0255 L or 25 ml. Inspiratory reserve volume is the additional volume that can be forcefully inhaled after normal tidal respiration. It can be calculated as follows. IRV=VC-ERV-TV=3.506-0.0255-0.393=3.088 L This can be approximated as 3 L. Peak expiratory flow rate (PER) is the maximum speed of expiration of a person. It is the maximum peak of the second graph, which can be approximated to 10.75 L/s.