Pharyngeal opening of auditory tube
Ostium pharyngeum tubae auditivae
- Latin synonym: Ostium pharyngeum tubae auditoriae
Definition
On the lateral wall of the nasal part of the pharynx is the pharyngeal ostium of the auditory tube, 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. A vertical fold of mucous membrane, thesalpingopharyngeal fold, stretches from the lower part of the torus; it contains the Salpingopharyngeus muscle.