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1 the mucous membrane of the vocal folds are vibrating. 2  NOTE: the structure still moves depending on what configuration we want, but the mucous membranes is what is creating the vibrations.  Anterior Portion: Starts at the anterior commissure and goes posteriorly 1/3 of the vocal cords.
No, vocal cord nodules are benign. They are composed of normal, non-cancerous, thickened vocal fold lining. Nodules are the bodyâs way of protecting the vocal folds from repeated trauma.