The torus tubarius (or torus of the auditory tube) is an elevation of the

mucous membrane A mucous membrane or mucosa is a membrane that lines various cavities in the body of an organism and covers the surface of internal organs. It consists of one or more layers of epithelial cells overlying a layer of loose connective tissue. It ...

of the nasal part of the pharynx formed by the underlying base of the

cartilaginous portion The Eustachian tube (), also called the auditory tube or pharyngotympanic tube, is a tube that links the nasopharynx to the middle ear, of which it is also a part. In adult humans, the Eustachian tube is approximately long and in diameter. It ...

of the Eustachian tube (auditory tube). The torus tubarius is situated behind the pharyngeal orifice of the auditory tube. The torus tubarius is very close to the

tubal tonsil The tubal tonsil, also known as Gerlach tonsil, is one of the four main tonsil groups forming Waldeyer's tonsillar ring. Structure Each tubal tonsil is located posterior to the opening of the Eustachian tube on the lateral wall of the nasoph ...

, which is sometimes also referred to as the ''tonsil of (the) torus tubarius''. Two folds run anteriorly and posteriorly to the torus tubarius: the

salpingopalatine fold The pharynx (: pharynges) is the part of the throat behind the mouth and nasal cavity, and above the esophagus and trachea (the tubes going down to the stomach and the lungs respectively). It is found in vertebrates and invertebrates, though its ...

(anteriorly), and the

salpingopharyngeal fold The pharynx (: pharynges) is the part of the throat behind the mouth and nasal cavity, and above the esophagus and trachea (the tubes going down to the stomach and the lungs respectively). It is found in vertebrates and invertebrates, though its ...

(posteriorly).

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* * {{Authority control Ear

See also

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