The purpose of the mucus found within the respiratory system is to A. trap particles from the air before they reach the lungs. B. lubricate the epiglottis. C. push the cilia away from the lungs. D. help move air through the windpipe.
The A answer is correct. The air we breathe is often polluted by tiny particles that could easily damage our pulmonary alveoli. The mucus, cilia and cough help to get rid of them.
