<prompt> Total lung capacity is:3 --4 litres4 --5 litres6 --7 litres7--8 litres  <response>: Ans. C. 6--7 litersImportant parameters of lungs: -a. Vital capacity IRVTVERV Inspiratory capacity ERVb. Inspiratory capacity IRVTVc. Functional residual capacity ERVRVd. Respirator minute volume or Pulmonary ventilation 6 Lmine. Alveolar ventilation at rest 4.2 Lminf. Maximal voluntary ventilation BTPS 125 -- 170 Lming. Timed vital capacity: - 80 of total in 1 second; 97 in 3 secondsh. Work of quite breathing: - 0.5 kg-mmin.i. Maximal work of breathing: - 10kg-mbreathj. TV 150mL dead space 350 Alveolar volume 500 ml 