Which of the following is a reason that the amount of extra subcutaneous fat would be higher than the amount of visceral fat? being a woman, stress, alcohol consumption, increasing age

Which of the following are considered general purposes of performing pulmonary function tests (pfts)? 1. the functional status of the lungs 2. the diffusion characteristics of the alveolar-capillary membrane 3. how much and how fast gas can be moved into and out of the lungs 4. the specific diagnosis of pulmonary disease