Chorditis (Paperback)

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Chorditis is the inflammation of vocal cords (vocal folds) usually as a result of voice abuse but sometimes because of cancer. The vocal folds, also known commonly as vocal cords, are composed of twin infoldings of mucous membrane stretched horizontally across the larynx. They vibrate, modulating the flow of air being expelled from the lungs during phonation.Open during inhalation, closed when holding one's breath, and vibrating for speech or singing (oscillating 440 times per second when singing A above middle C), the folds are controlled via the vagus nerve. They are white because of scant blood circulation.