The larynx is the organ that connects the lower part of the pharynx with the trachea. It serves (1) as a valve to guard the air passages, especially during swallowing, (2) for the maintenance of a patent airway, and (3) for vocalization.The anterior aspect of the larynx is quite superficial (fig.ach lateral wall of the nasopharynx has the pharyngeal opening of the auditory tube, located about 1 to 1.5 cm (1) inferior to the roof of the pharynx, (2) anterior to the posterior wall of the pharynx, (3) superior to the level of the palate, and (4) posterior to the inferior nasal concha and the nasal septum (fig.