Mucus occurs in both the respiratory and digestive tracts. What is its main immunological function?
A) sweeping away debris
B) physically trapping of pathogens
C) destruction of pathogens because it is acidic
D) increasing oxygen absorption

Question

Quizplus · Accepted Answer

Mucus traps pathogens and prevents them from entering the body. In the respiratory tract, it traps airborne pathogens and in the digestive tract, it traps pathogens in food and drink. By physically trapping the pathogens, the body can then remove them from the body through coughing or swallowing.

Mucus Occurs in Both the Respiratory and Digestive Tracts