Torus tubarius

Torus tubarius

Infobox Anatomy
Name = Torus tubarius
Latin =
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Caption = Auditory tube, laid open by a cut in its long axis. (Torus tubarius not labeled.)

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The base of the cartilaginous portion of the Eustachian tube lies directly under the mucous membrane of 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 palatini muscle. The tensor veli palatini is lateral to the levator and does not contribute the fold, since the origin is deep to the cartilaginous opening.

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Look at other dictionaries:

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  • torus tubarius — torus tu·ba·ri·us t(y)ü ber ē əs n a protrusion on the lateral wall of the nasopharynx marking the pharyngeal end of the cartilaginous part of the eustachian tube * * * [TA] tubal prominence: the projecting posterior lip of the pharyngeal opening …   Medical dictionary

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  • torus — 1. [TA] A rounded swelling, such as that caused by a contracting muscle. SYN: elevation [TA]. 2. A geometric figure formed by the revolution of a circle around the base of any of its arcs, such as the convex molding at the base of a pillar. [L.… …   Medical dictionary

  • eustachian cushion — torus tubarius …   Medical dictionary

  • tubal prominence — torus tubarius …   Medical dictionary

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  • трубный валик — (torus tubarius, PNA, BNA, JNA) возвышение в носовой части глотки, в котором расположен хрящ слуховой (евстахиевой) трубы …   Большой медицинский словарь

  • Тру́бный ва́лик — (torus tubarius, PNA, BNA, JNA) возвышение в носовой части глотки, в котором расположен хрящ слуховой (евстахиевой) трубы …   Медицинская энциклопедия

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