Identify the anatomical structures labeled in the provided anatomical model of the human respiratory system.

Answer

The image displays an anatomical model of the upper and lower respiratory structures. The labeled parts are as follows: 1. Larynx: This is the 'voice box' and is the entire structure indicated by the large bracket. It houses the vocal cords and serves as the gateway to the trachea. 2. Thyroid Cartilage: Specifically pointed to by the middle arrow, this is the largest of the nine cartilages that make up the laryngeal skeleton. In males, the prominent anterior part is often referred to as the 'Adam's apple.' 3. Cricoid Cartilage: Pointed to by the lower arrow, this is a ring of hyaline cartilage that forms the inferior wall of the larynx. It is positioned below the thyroid cartilage and sits directly atop the first ring of the trachea. Below these structures, you can see the trachea (windpipe) leading down to the carina, which then bifurcates into the left and right primary bronchi.