Pharyngeal ostium

Pharyngeal opening of auditory tube
Front of nasal part of pharynx, as seen with the laryngoscope. (Pharyngeal ostium labeled at bottom right.)
External and middle ear, opened from the front. Right side.
Latin ostium pharyngeum tubae auditivae
Gray's subject #244 1141

On the lateral wall of the nasal part of the pharynx is the pharyngeal opening of auditory tube (pharyngeal ostium), somewhat triangular in shape, and bounded behind by a firm prominence, the torus or cushion, caused by the medial end of the cartilage of the tube which elevates the mucous membrane.

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This article incorporates text from a public domain edition of Gray's Anatomy.


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