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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.
Symptoms can vary, depending on the vocal cord disorder. 1  Vocal cord nodules. 2  Vocal cord polyps. 3  Contact ulcers. 4  Laryngitis. Vocal cord tumors.  Vocal cord paresis.