part of part of continuous with anatomical space chordate pharynx pharyngeal opening of pharyngotympanic tube pharyngeal tubal ostium pharyngeal opening of eustachian tube pharyngeal orifice of eustachian tube pharyngeal opening of auditory tube pharyngeal orifice of pharyngotympanic tube ostium pharyngeum tubae auditivae FMA:54979 ostium pharyngeum tubae auditoriae pharyngeal ostium of eustachian tube pharyngeal orifice of auditory tube pharyngeal ostium SCTID:368945008 On the lateral wall of the nasal part of the pharynx is the pharyngeal opening of auditory tube (pharyngeal ostium), somewhat triangular in shape, and bounded behind by a firm prominence, the torus or cushion, caused by the medial end of the cartilage of the tube which elevates the mucous membrane. ostium pharyngeum tubae auditivae pharyngeal ostium of auditory tube Wikipedia:Pharyngeal_opening_of_auditory_tube UBERON:0010060 pharyngeal ostium of pharyngotympanic tube lumen of nasopharynx