Question

Which region(s) of the pharynx are lined by pseudostratified ciliated columnar epithelium?

a. Oropharynx and nasopharynx
b. Oropharynx, nasopharynx, and laryngopharynx
c. Nasopharynx
d. Laryngopharynx
e. Oropharynx

Answer 1

The regions of the pharynx lined by pseudostratified ciliated columnar epithelium are the oropharynx, nasopharynx, and laryngopharynx.

Step-by-step explanation:

The region(s) of the pharynx that are lined by pseudostratified ciliated columnar epithelium are:

1. Oropharynx
2. Nasopharynx
3. Laryngopharynx

This specialized epithelium contains goblet cells that produce mucus to trap debris and pathogens as they enter the respiratory tract. The cilia beat the mucus upward towards the laryngopharynx, where it can be swallowed down the esophagus.