Question

The oropharynx: A) contains the adenoids on its posterior wall. B) forms the posterior portion of the oral cavity. C) is bordered superiorly by the hard palate only. D) consists of the anterior portion of the oral cavity.

1) contains the adenoids on its posterior wall.
2) forms the posterior portion of the oral cavity.
3) is bordered superiorly by the hard palate only.
4) consists of the anterior portion of the oral cavity.

Answer 1

The oropharynx contains the adenoids on its posterior wall, located superior to it in the nasopharynx, and hosts the palatine and lingual tonsils involved in immune responses.

Step-by-step explanation:

A) contains the adenoids on its posterior wall. The oropharynx is a section of the pharynx that lies between the nasopharynx and the laryngopharynx. It functions as a passageway for both air and food. The oropharynx extends from the uvula to the level of the hyoid bone.

The adenoids, or pharyngeal tonsils, are lymphoid tissue located on the posterior wall of the nasopharynx, not the oropharynx. These structures trap and destroy pathogens entering through the oral or nasal cavities. Contrarily, the oropharynx contains the palatine and lingual tonsils, which are involved in similar immune functions but are distinct from the adenoids.

The oropharynx is flanked anteriorly by the oral cavity and extends to the esophagus posteriorly. The superior border is contiguous with the nasopharynx, while the inferior part connects with the laryngopharynx. The epithelium of the oropharynx is composed of stratified squamous cells suitable for its dual role in respiratory and digestive systems.