Question

In the respiratory system, epithelial cells

remove carbon dioxide from the body.
act as a passageway by which air moves into the lungs.
secrete fluids that protect the inside of the trachea.
transfer oxygen to the cells in the body.

Answer 1

act as a passageway in which the air moves into the lungs.

Step-by-step explanation:

ed

Answer 2

The answer is that Epithelial cells act as a passageway in which the air moves into the lungs. The epithelial cells in the respiratory system would serve as a leak proof barrier that do transports, filters as well as conditions the air one is breathing.