Ventricular fold

Ventricular fold (also known as the false vocal cord or vestibular fold) is a part of the anatomy of the human larynx. It is a fold of mucous membrane that extends from the laryngeal ventricle.

Anatomy

The ventricular fold is located in the larynx, above the vocal cords. It is covered by a layer of mucous membrane, which helps to protect the vocal cords and the larynx from damage and infection. The ventricular fold does not vibrate during normal phonation, but it can be used to produce certain types of vocal effects, such as vocal fry and growling.

Function

The primary function of the ventricular fold is to protect the vocal cords and the larynx from damage and infection. During swallowing, the ventricular folds close to prevent food and liquid from entering the larynx and trachea. They also close during coughing and sneezing to protect the lower airways.

In addition to their protective function, the ventricular folds can also contribute to voice production. Although they do not vibrate during normal phonation, they can be used to produce certain types of vocal effects, such as vocal fry and growling.

Clinical significance

Abnormalities of the ventricular folds can lead to a variety of voice disorders. For example, nodules or polyps on the ventricular folds can cause hoarseness, voice fatigue, and other voice problems. In some cases, surgery may be required to remove the abnormal tissue and restore normal voice function.

Ventricular dysphonia is a voice disorder that is characterized by the excessive use of the ventricular folds during phonation. This can result in a voice that is low-pitched, rough, and strained. Treatment for ventricular dysphonia typically involves voice therapy to teach the individual how to use their vocal cords properly.

See also

• Vocal cords
• Larynx
• Phonation
• Vocal fry
• Growling (vocalization)