Mucus and pathogens are swept out of the larynx and trachea by:
A)smooth muscle
B)peristalsis
C)ciliated epithelium
D)squamous epithelium

Question

Quizplus · Accepted Answer

The ciliated epithelium in the respiratory tract sweeps mucus and pathogens out of the larynx and trachea through a process called the mucociliary escalator. The cilia beat in a coordinated manner, propelling the mucus and trapped particles up towards the pharynx where they can be expelled through coughing or swallowing. Smooth muscle and peristalsis are not involved in this process, and squamous epithelium is not present in the respiratory tract.

Mucus and Pathogens Are Swept Out of the Larynx and Trachea