Physiology Regarding pulmonary function test all are TRUE, EXCEPT:- A Total lung volume increases in emphysema B Compliance decreases in interstitial lung disease. C Compliance is total lung distensibility D FEV1 is forced expiratory rate at one minute. 💡 Explanation Regarding pulmonary function test all are TRUE, EXCEPT:- ✓ Correct Answer: D. FEV1 is forced expiratory rate at one minute.