The fluid that traps pathogens in the respiratory tract is:
A)serous fluid
B)mucus
C)plasma
D)synovial fluid

Question

Quizplus · Accepted Answer

The respiratory tract is lined by mucus-secreting cells, which produce a sticky fluid that traps pathogens, dust particles, and other foreign substances. The mucus is then propelled upwards by the cilia lining the respiratory tract and is eventually swallowed or coughed up. Serous fluid is a clear, watery fluid that is found in body cavities and is not involved in trapping pathogens in the respiratory tract. Plasma is the liquid component of blood and is not found in the respiratory tract. Synovial fluid is found in joints and is not involved in the respiratory tract.

The Fluid That Traps Pathogens in the Respiratory Tract Is