Which cartilage is described as being right below the thyroid cartilage and affixed by hinges?

The cricoid cartilage is located directly beneath the thyroid cartilage and has a distinct shape, resembling a ring. It plays a crucial role in the respiratory system as it provides support and structure to the trachea and larynx. The hinges mentioned refer to the way the cricoid cartilage articulates with the thyroid cartilage, allowing for some movement which is essential for proper vocal function and airway protection during swallowing. This hinge mechanism facilitates adjustments in pitch and sound production as the vocal cords interact with these cartilages.

The arytenoid cartilage, while significant in vocal fold movement, is located above the cricoid cartilage and does not serve as the main structural support between the thyroid and cricoid cartilages. The thyroid cartilage is actually above the cricoid cartilage, and the hyoid bone is not part of the laryngeal structure but rather sits above it, connected indirectly. Understanding these anatomical relationships is essential for grasping how sound production and airway management function in the human body.