Final answer:
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:
- Oropharynx
- Nasopharynx
- 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.