- Torus tubarius
Name = Torus tubarius
GraySubject = 230
GrayPage = 1043
Caption = Auditory tube, laid open by a cut in its long axis. (Torus tubarius not labeled.)
DorlandsPre = t_14
DorlandsSuf = 12813973
The base of the cartilaginous portion of the
Eustachian tubelies directly under the mucous membraneof the nasal part of the pharynx, where it forms an elevation, the torus tubarius or cushion, behind the pharyngeal orifice of the tube.
Two folds run inferiorly:
*posteriorly, the vertical fold of mucous membrane, the
salpingopharyngeal fold, stretches from the lower part of the torus; it contains the Salpingopharyngeus muscle.
*anteriorly, the second and smaller fold, the
salpingopalatine fold, stretches from the upper part of the torus to the palate; it contains the levator veli palatinimuscle. The tensor veli palatiniis lateral to the levator and does not contribute the fold, since the origin is deep to the cartilaginous opening.
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