Torus tubarius
Torus tubarius
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 tubarius (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.
References
This definition incorporates text from a public domain edition of Gray's Anatomy (20th U.S. edition of Gray's Anatomy of the Human Body, published in 1918 – from http://www.bartleby.com/107/).
