What are the anatomical divisions of the pharynx?

• A. Nasopharynx, Oropharynx, Laryngopharynx
• B. Nasal Cavity, Oral Cavity, Larynx
• C. Trachea, Bronchi
• D. Nose, Nasopharynx, Oropharynx

Answer: (A)

The pharynx is organized into three regions: nasopharynx, oropharynx, and laryngopharynx. The nasopharynx sits behind the nasal cavity and above the soft palate; it serves primarily as an air passage and contains openings for the Eustachian tubes and the pharyngeal tonsils. The oropharynx lies behind the oral cavity, extending from the soft palate to the level of the hyoid bone; it handles both air and food and contains the palatine and lingual tonsils, helping defend the airway. The laryngopharynx extends from the hyoid bone down to where the pathway splits into the esophagus and the larynx; it also conveys both air and food and is lined with stratified squamous epithelium to better withstand friction from swallowed material.

Other options don’t fit because they mix structures outside the pharynx or omit a region. The nasal cavity, oral cavity, and larynx are not divisions of the pharynx itself. The trachea and bronchi are lower airway passages well below the pharynx. And listing the nose with the nasopharynx and oropharynx leaves out the laryngopharynx, which is a distinct part of the pharynx.