Cuneiform cartilages

Small cartilaginous structures situated in the larynx that play a role in vocal cord function.

Cuneiform cartilages are paired, elongated, rod-like structures composed of elastic cartilage found in the larynx, specifically situated within the aryepiglottic folds. They are not entirely free-standing; rather, they are embedded within the tissue of the folds, providing them with support and flexibility. These cartilages are part of the laryngeal framework and contribute to the overall shape and function of this vital organ involved in breathing, phonation, and protecting the airway.

Terminologia Anatomica

cartilagines cuneiformes

System

Respiratory system

Function

The primary functions of cuneiform cartilages are to provide structural support to the larynx and to assist in the maintenance of the shape of the airway. By reinforcing the aryepiglottic folds, these cartilages play a crucial role in the movement and positioning of the epiglottis during swallowing. This action helps prevent food and liquids from entering the windpipe, protecting the respiratory tract. Furthermore, the cuneiform cartilages contribute to the modulation of sound by influencing the tension and position of the vocal cords during phonation. Their flexibility allows for subtle adjustments during speech, making them essential for producing a wide range of vocal sounds. This adaptability contributes to the richness and variability of human vocalization.

Location

Cuneiform cartilages are located in the larynx, specifically within the aryepiglottic folds, which extend from the lateral edges of the epiglottis down to the sides of the laryngeal inlet. Positioned just above the arytenoid cartilages and flanking the epiglottis, these small structures are found laterally on both sides of the laryngeal opening. Due to their placement, cuneiform cartilages are integral to the formation of the laryngeal framework and facilitate the dynamic processes involved in breathing and vocalization. Their embedded nature within the surrounding tissues allows them to act as supportive elements that contribute to the overall stability and functionality of the laryngeal architecture.

Did You Know?

Cuneiform cartilages are sometimes referred to as 'wedge-shaped' due to their unique form.
Despite their small size, cuneiform cartilages play a significant role in voice modulation and protection of the airway.
Cuneiform cartilages are not attached to other bones or cartilages; instead, they are situated within soft tissue, providing important flexibility.