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Torus tubarius

Recommended video: Pharyngeal mucosa [16:41]
Pharyngeal mucosa and related structures.

The torus tubarius, also known as the torus or cushion of the auditory tube, is an elevation of the mucous membrane in the nasopharynx. It is formed by the base of the cartilaginous portion of the auditory (Eustachian) tube.

Anterior to the torus tubarius is the pharyngeal opening of the auditory tube, whilst the pharyngeal recess lies immediately posterior. Two mucosal folds extend inferiorly from the torus tubarius. The anterior and smaller of the two folds is the salpingopalatine fold, which covers the underlying salpingopalatine muscle. The posterior and larger of the two folds is the salpingopharyngeal fold, which covers the underlying salpingopharyngeus muscle

Terminology English: Torus tubarius
Latin: Torus tubarius
Definition Elevation of mucous membrane in the nasopharynx formed by the base of the cartilaginous portion of the auditory tube

Learn more about the nasopharynx with this study unit (and article):

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