The term "false vocal fold" refers to a pair of elastic folds located in the larynx, a part of the respiratory tract. These folds, also known as the ventricular folds or vestibular folds, are situated above the true vocal folds, which are responsible for voice production. While the true vocal folds are essential in speech and singing, the false vocal folds have a different purpose.
Functionally, the false vocal folds play a role in protecting the airway by preventing foreign objects or excessive mucus from entering the lungs. During swallowing, these folds close tightly, creating a barrier that directs food and liquid to the esophagus instead of the airway. Furthermore, when one coughs or forcefully exhales, the false vocal folds add resistance to the airflow, which aids in the expulsion of irritants or excess secretions.
Structurally, the false vocal folds are thicker and less flexible compared to the true vocal folds, which primarily consist of muscle covered by a thin lining. Although the false vocal folds do not participate in normal phonation, certain voice disorders or pathologies may cause them to vibrate abnormally, resulting in voice changes or hoarseness.
Overall, the false vocal folds serve an important protective function for the respiratory system. By assisting in the preservation of airway integrity and facilitating proper phonation, these structures contribute to effective voice production and the prevention of potential health hazards.
