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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.
From the nasal cavity its continuity with the conjunctiva may be traced, through the nasolacrimal and lacrimal ducts; and with the frontal, ethmoidal, sphenoidal, and maxillary sinuses, through the several openings in the meatuses. The mucous membrane is thickest, and most vascular, over the nasal conchae.It is also thick over the septum; but it is very thin in the meatuses on the floor of the nasal cavities, and in the various sinuses. It is one of the most commonly infected tissues in adults and children.tructure of the Mucous Membrane (Fig. 857).âThe epithelium covering the mucous membrane differs in its character according to the functions of the part of the nose in which it is found.