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Encyclopedia > Vocal cords
Laryngoscopic view of the vocal folds.
Laryngoscopic view of the vocal folds.

The vocal cords, also known as vocal folds, are composed of twin infoldings of mucous membrane stretched horizontally across the human larynx. They vibrate, modulating the flow of air being expelled from the lungs during phonation. Image File history File links File links The following pages link to this file: Vocal cords Wikipedia:Grays Anatomy images with missing articles 20 ... Image File history File links File links The following pages link to this file: Vocal cords Wikipedia:Grays Anatomy images with missing articles 20 ... The mucous membranes (or mucosae; singular: mucosa) are linings of ectodermic origin, covered in epithelium, and are involved in absorption and secretion. ... The larynx (plural larynges), or voicebox, is an organ in the neck of mammals involved in protection of the trachea and sound production. ... Oscillation is the periodic variation, typically in time, of some measure as seen, for example, in a swinging pendulum. ... Phoneticians define phonation as use of the laryngeal system to generate an audible source of acoustic energy, i. ...


Open during breathing, the folds are controlled via the arytenoid cartilages for speech or singing. They are white because of poor blood circulation. The arytenoid cartilages are a pair of small pyramid-shaped cartilages, at the upper rear of the larynx, to which the vocal cords are attached. ... White is a color (more accurately it contains all the colors of the visible spectrum and is sometimes described as an achromatic color—black is the absence of color) that has high brightness but zero hue. ... The circulatory system or cardiovascular system is the organ system which circulates blood around the body of most animals. ...


The folds vibrate when they are closed to obstruct the airflow through the glottis, the space between the folds: they are forced open by increased air pressure in the lungs, and closed again as the air rushes past the folds, lowering the pressure (Bernoulli's principle). A person's voice pitch is determined by the resonant frequency of the vocal folds. In an adult male this frequency averages about 125 Hz, adult females around 210, in children the frequency is over 300 Hz. Lollerskates. The space between the vocal cords is called the glottis. ... Atmospheric pressure is the pressure caused by the weight of air above any area in the Earths atmosphere. ... —Bernoullis principle states that in fluid flow, an increase in velocity occurs simultaneously with decrease in pressure. ... In music, pitch is the perception of the frequency of a note. ... This article is about resonance in physics. ... The hertz (symbol Hz) is the SI unit of frequency. ...


See also


  Results from FactBites:
 
Vocal Cord Disorders - Sharp HealthCare in San Diego (802 words)
The sound the vocal cords produce is then sent through the throat, nose, and mouth, giving the sound "resonance." The sound of each individual voice is determined by the size and shape of the vocal cords and the size and shape of the throat, nose, and mouth (the resonating cavities).
Vocal cord disorders are often caused by vocal abuse or misuse, such as excessive use of the voice when singing, talking, smoking, coughing, yelling, or inhaling irritants.
Vocal nodules are benign (non-cancerous) growths on the vocal cords caused by vocal abuse.
UW Health | University of Wisconsin Hospital and Clinics and UW Physicians, Madison, Wisconsin based academic medical ... (751 words)
The sound the vocal cords produce is then sent through the throat, nose, and mouth, giving the sound "resonance." The sound of each individual voice is determined by the size and shape of the vocal cords and the size and shape of the throat, nose, and mouth (the resonating cavities).
Vocal cord disorders are often caused by vocal abuse or misuse, such as excessive use of the voice when singing, talking, smoking, coughing, yelling, or inhaling irritants.
Vocal nodules are benign (non-cancerous) growths on the vocal cords caused by vocal abuse.
  More results at FactBites »

 
 

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