How much time of cardio activity is recommended for kids and teens by the cdc?

Which of the following is a nonspecific defense against pathogens? - b cells - antibodies - t-cells - inflammation

True or false mucous membranes destroy pathogens on the outer body surface, at body openings.

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