Microorganisms Trapped in the Mucus of the Nasal Cavity Eventually

Question

Microorganisms trapped in the mucus of the nasal cavity eventually end up in the __________.
A) larynx
B) trachea
C) stomach
D) alveoli

Accepted Answer

Microorganisms trapped in the mucus of the nasal cavity are moved by cilia towards the pharynx, where they are swallowed and eventually end up in the stomach. The acidic environment of the stomach helps to kill most of these microorganisms.