<prompt> Regarding pulmonary function test all are TRUE, EXCEPTTotal lung volume increases in emphysemaCompliance decreases in interstitial lung diseaseCompliance is total lung distensibilityFEV1 is forced expiratory rate at one minute  <response>: Changes in lung function tests in obstructive lung diseases- Eg: EmphysemaTLC- IncreaseRV- IncreaseFRC- IncreasePeak expiratory flow rate- DecreaseFEV1- Decreased out of proportion to FVC Forced vital capacityForced expiratory vital capacity FEVC- Normal to slightly decreasedFEV1FEVC- Decreased May decrease as low as 20-30 Changes in lung function tests in restrictive lung diseasesTLC- DecreasedRV- DecreasedFRC- DecreasedForced mid expiratory flow rate- DecreaseFEV1- Decreased in proportion to FVC Forced vital capacityForced vital capacity FVC- Decreased FEV1FEVC- Near normal or increased.Lung compliance- decreasedDiffusion capacity- decreasedFEV1- Forced expiratory volume in 1 second. 