Tags: Anatomical Structure.

The vocal folds also known commonly as vocal cords or voice reeds are composed of twin infoldings of mucous membrane stretched horizontally from back to front 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.

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