Final answer:
The nasopharynx is the upper part of the pharynx, lying above the soft palate and connecting the nasal cavities to the oropharynx. It is essential for breathing and speech, but not for digestion.
Step-by-step explanation:
The student is asking about the location of the nasopharynx. The nasopharynx is the upper part of the pharynx that lies above the soft palate. It extends from the nasal cavities to the oropharynx and is not directly involved in digestion. The nasopharynx also features openings to the Eustachian (auditory) tubes, which connect to the middle ear.
The pharyngeal tonsil is located in the nasopharynx. When asked to indicate which arrow points to the nasopharynx in a diagram, one needs to look for the region that is located posterior to the nasal cavity and superior to the oropharynx.
It has three subdivisions: the nasopharynx, the oropharynx, and the laryngopharynx. The nasopharynx is the most superior subdivision and is involved only in breathing and speech.