Loss of Lung Tissue Elasticity Is Characteristic of

The white blood cells that work to remove foreign particles from the respiratory tract are called A)T-cells. B)blastocysts. C)B-cells. D)macrophages.

Which of the following BEST describes the long-term effects of tobacco use? A)Beginning to smoke at age 15 cuts life expectancy in half. B)Smokers are ill more frequently than nonsmokers. C)Smoking is responsible for almost all cases of sinusitis in the United States. D)Long-term smoking is worse for men than women.