text: pulmonary ventilation. Okay, where atmospheric air is been drawn in, alveolar air is been released out. ಇನ್ನು simple ಆಗಿ ಹೇಳ್ಬೇಕು ಅಂದ್ರೆ where we inhale air and we exhale air. Okay, ಸರಿ ಈಗ we have inhaled air