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The vocal folds are commonly referred to as vocal cords, and less commonly as vocal flaps or vocal bands. The term vocal cords was coined by the French anatomist Antoine Ferrein in 1741. In his violin analogy of the human voice , he postulated that the moving air acted like a bow on cordes vocales . [ 43 ]
Adult men and women typically have different sizes of vocal fold; reflecting the male–female differences in larynx size. Adult male voices are usually lower-pitched and have larger folds. The male vocal folds (which would be measured vertically in the opposite diagram), are between 17 mm and 25 mm in length. [10]
In normal vocal folds, the jelly-like "Reinke's space" is very loose and abundant with interstitial proteins such as hyaluronic acid, fibronectin, proteoglycan like fibromodulin, decorin and versican. All these extracellular matrix components together regulate the water content of vocal fold and render the viscous shear property for it.
Advocates of this theory thought that every single vibration of the vocal folds was due to an impulse from the recurrent laryngeal nerves and that the acoustic center in the brain regulated the speed of vocal fold vibration. [8] Speech and voice scientists have long since abandoned this theory as the muscles have been shown to not be able to ...
A vocal register is a range of tones in the human voice produced by a particular vibratory pattern of the vocal folds. These registers include modal voice (or normal voice), vocal fry, falsetto, and the whistle register. [1] [2] [3] Registers originate in laryngeal function. They occur because the vocal folds are capable of producing several ...
Adductor spasmodic dysphonia, which is the kind Kennedy has, means “the vocal folds press too tightly together during speech,” Frankford says. “That causes this raspy or creaky kind of voice ...
The vocal apparatus consists of two pairs of folds, the vestibular folds (false vocal cords) and the true vocal cords. The vestibular folds are covered by respiratory epithelium, while the vocal cords are covered by stratified squamous epithelium. The vestibular folds are not responsible for sound production, but rather for resonance.
Spasmodic dysphonia is a rare chronic neurological speech disorder that results in involuntary spasms of the muscles that open or close the vocal folds. It causes the voice to suddenly sound ...