Question

question 38 (2 points) the upper regions of our respiratory tract contain structures that add pathogens to our inspired air warm and filter the air before it reaches the lungs aid in the digestion of inspired air provide direct air flow to all of the cells in our body transfer gases from the air to/from our circulatory system

Explanation:

The upper respiratory tract, including the nose and pharynx, warms, humidifies, and filters the air we breathe before it reaches the lungs. It does not add pathogens, aid in air - digestion, provide direct airflow to body cells, or transfer gases to/from the circulatory system (this is mainly the function of the lungs).

Answer:

B. warm and filter the air before it reaches the lungs