This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
[{'content': 'Adenoid lies in the: \nSelect and explain. \nA. Hypopharynx, B. Oropharynx, C. Trachea, D. Nasopharynx', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Tonsils:-\nCollections of lymphoid tissue in the oral, nasal and pharyngeal region.\nCLINICAL ANATOMY\n\nHypertrophy or enlargement of the nasopharyngeal tonsil or adenoids may obstruct the posterior nasal aperture and may interfere with nasal respiration and speech leading to mouth breathing. These tonsils usually regress by puberty.\nHypertrophy of the tubal tonsil may occlude the auditory or pharyngotympanic tube leading to middle ear problems.\n\nWaldeyers tonsillar ring has:-\n\nAdenoid tonsil (or nasopharyngeal tonsils) – in nasopharynx\nTwo palatine tonsils (or simply tonsils) – in oropharynx b/w palatoglossal and palatopharyngeal\xa0arches\nLingual tonsil – Behind terminal sulcus (tongue)\xa0 Two tubal tonsils — root of pharynx.\n\nKey Concept:\nAdenoid tonsils are also known as nasopharyngeal tonsil, named based on its location.', 'role': 'assistant'}]