Which of the following lists the divisions of the larynx?

• A. Thyroid, cricoid, epiglottis, arytenoid, corniculate, cuneiform.
• B. Trachea, bronchi, bronchioles, alveoli.
• C. Hyoid bone, mandible, zygomatic, nasal bones.
• D. Epiglottis, larynx, pharynx, trachea.

Answer: (A)

The main idea here is recognizing the cartilaginous framework that forms the larynx. The larynx is supported by several cartilages that create its shape and enable voice production and airway protection. The major elements are the thyroid cartilage (the shield-shaped front wall), the cricoid cartilage (a ring beneath the thyroid), the epiglottis (a leaf-shaped piece that covers the glottis during swallowing), and the paired arytenoid cartilages (which control the vocal cords and open/close the vocal opening). In addition, smaller corniculate and cuneiform cartilages help reinforce the laryngeal inlet and folds. This combination correctly lists the divisions of the laryngeal cartilages. The other options point to parts of the lower respiratory tract, facial/bony structures, or mixed regions that aren’t the laryngeal cartilage divisions, so they don’t fit as well.