Certified Tumor Registrar (CTR) Practice Exam

Supraglottis, glottis, and subglottis are subsites of which anatomical structure?

1. Trachea

2. Pharynx

3. Larynx

4. Eustachian tube

The correct answer is: Larynx

The correct answer is C, as the supraglottis, glottis, and subglottis are all subsites that specifically refer to structures within the larynx. The larynx is the part of the respiratory system located below the pharynx and above the trachea, and it plays a critical role in voice production, breathing, and protecting the airway during swallowing. The supraglottis includes the area above the vocal cords, encompassing structures such as the epiglottis and false vocal cords. The glottis refers to the area that contains the true vocal cords and the space between them (the glottic opening), which is essential for phonation. The subglottis is the region located below the vocal cords, extending to the trachea. Each of these subsites is significant when discussing diseases and conditions affecting the larynx, particularly in the context of head and neck cancers where precise location and anatomy play crucial roles in diagnosis and treatment planning. The other options refer to different anatomical structures that do not encompass these specific subsites. The trachea is part of the airway below the larynx, the pharynx is located above the larynx and serves as