Pulmonary surfactant<span> is a mixture of lipids and proteins which is secreted into the alveolar space by epithelial type II cells. The main </span>function<span> of </span>surfactant <span>is to lower the surface tension at the air/liquid interface within the alveoli of the </span>lung<span>.
Source: </span>http://www.sciencedirect.com/science/article/pii/S000527360000256X
Completely stop touching the patient and stop doing CPR so that the AED can get a correct read on the patients heart beat.
All of the choices from a to c, those are: congestion, cardiovascular disease, respiratory disease may be caused by the continued exposure to the polluted air. When polluted air gets inside our body, the body gets lesser fresher oxygen than the amount it really needs.