Question

what is the function of the alveoli in the lungs? to exchange gasses with the blood to moisten air as it enters the nose to contract to force air out of the lungs to filter out airborne particles

Explanation:

Alveoli are tiny air - sacs in the lungs where oxygen from the inhaled air diffuses into the blood and carbon dioxide diffuses out of the blood into the alveoli to be exhaled. This is gas - exchange. Moistening air occurs in the nasal cavity, contraction to force air out involves the diaphragm and intercostal muscles, and filtering airborne particles is mainly done by the nasal hairs and mucus in the respiratory tract.

Answer:

to exchange gasses with the blood