Temperature regulation help the respiratory system keep homeostasis

Which one of the following is NOT a function of the respiratory system? O A. Speech and sound generation O B. Exchanges oxygen and carbon dioxide between the air and the blood O C. Protection against inhaled microorganisms O D. Filters inhaled particulate matter E. Changes blood pH by changing oxygen levels

Smoking damages two parts of the respiratory system: the airways known as the [1] and small air sacs called the [2]. [3] in your airway helps capture debris (dust, smoke, pathogens) in the air you breathe, then structures called [4] sweep the [5] and debris out of your lungs. Cigarette smoke irritates the lining of your airway, causing it to [6]