Vocal cords

The vocal apparatus

The larynx is called a voice box, but its primary function is to keep the airway open and prevent us from literally inhaling our food. Interlocking cartilages form a tube to the trachea and the lungs. During swallowing a leaf-shaped cartilage called the epiglottis covers the opening, but only partly. In the larynx, small cartilages pull the fibrous vocal cords open and closed. When closed, the passage of air through the vocal cords creates the sound of our voice. The vocal cords, as well as a pair of tissue folds known as “false” vocal cords, pull closed when swallowing and help keep food and liquids out of the trachea.

Partial loss of voice (dysphonia) may result from anything that interferes with the vocal cords. Temporary dysphonia most often results from muscle strain from overuse, or swelling of the cords (laryngitis). Chronic dysphonia may result from benign growths on the cords called polyps, thickening caused by hypothyroidism, brain problems such as stroke and Parkinson’s disease, or when growths or surgery impede or damage nerve supply to the vocal cords. In some cases the cause is unknown (idiopathic dysphonia). If you have chronic voice problems, see your health care provider, especially if there are also problems with swallowing or breathing.

LABELS:
Base of tongue
Epiglottis
Vocal cord
Glottis
“False” vocal cord
Cartilages
Trachea

Text and illustrations by Kevin T. Boyd

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Acupressure for the throat
Here are lists of acupressure points for Throat problems and the Tongue, on PointFinder.org.
If this is your first time, please read the instructions. Don’t use acupressure to replace standard emergency procedures or licensed medical treatment. If you are seriously injured or have acute symptoms seek urgent medical treatment.

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