A clear, jelly-like substance that fills the middle of the eye. Also called the vitreous humor, “humor” in medicine referring to a fluid (or semifluid) substance.
- Vocal cord
We use the larynx when we breathe, talk, or swallow. Its outer wall of cartilage forms the area of the front of the neck referred to as the “Adams apple.” Each time we inhale (breathe in), air goes into our nose or mouth, then through the larynx, down the trachea, and into our lungs. When […]
- Vocal cord paralysis
Inability of one or both vocal folds (vocal cords) to move. The paralysis is usually due to damage to the nerves going to the vocal cords or due to damage to the brain itself. In more technical terms, vocal cord paralysis may result from lesions in the nucleus ambiguus or its supranuclear tracts in the […]
- Vohwinkel syndrome
A genetic disorder characterized by hearing loss and thickened skin, particularly on the knuckles. The sensorineural hearing is mild-to-moderate in degree. The thickening of the skin (hyperkeratosis) can be “mutilating” and cause autoamputation of the digits. The syndrome is inherited in an autosomal dominant manner. It is caused by mutation in the GJB2 gene (connexin […]
- Voice box
The voice box, or larynx, is the portion of the respiratory (breathing) tract containing the vocal cords which produce sound. It is located between the pharynx and the trachea. The larynx, also called the voice box, is a 2-inch-long, tube-shaped organ in the neck. We use the larynx when we breathe, talk, or swallow. Its […]
- Voice disorder
Voice disorder is characterized by the abnormal production and/or absences of vocal quality, pitch, loudness, resonance, and/or duration, which is inappropriate for an individual’s age and/or sex.