Torus tubarius

Torus tubarius
Auditory tube, laid open by a cut in its long axis (torus tubarius not labeled)
Details
Identifiers
Latin	Torus tubarius
Dorlands /Elsevier	t_14/12813973
TA	A05.3.01.012
FMA	54993
Anatomical terminology []

The base of the cartilaginous portion of the auditory tube (eustachian tube, pharyngotympanic tube) lies directly under the mucous membrane of the nasal part of the pharynx, where it forms an elevation, the torus tubarius, the torus of the auditory tube, or cushion, behind the pharyngeal orifice of the tube. The torus tubarius is very close to the tubal tonsil, which is sometimes also called the tonsil of (the) torus tubarius. Equating the torus with its tonsil however might be seen as incorrect or imprecise.

Two folds run posteriorly and anteriorly:

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)