The cricoid cartilage is a ring-shaped structure located in the neck, forming part of the larynx, or voice box. It sits below the thyroid cartilage and above the trachea, providing support and maintaining the airway's shape. This cartilage is unique because it is the only complete ring of cartilage in the respiratory tract. In addition to its structural role, the cricoid cartilage serves as an attachment point for various muscles and ligaments involved in voice production and breathing. It plays a crucial role in the function of the vocal cords, allowing for the modulation of sound during speech.