If you skip the cool-down portion of exercise, a. you run the risk of gaining weight. b. you can work out in less time. c. blood can pool in the exercised parts of the body and diminish the return of blood to the heart. d. you won't be able to work out the next day.

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