Maxillary hiatus

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Maxillary hiatus
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Medial wall of left orbit.
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Left maxilla. Nasal surface.
Latin hiatus maxillaris
Gray's p.995

Below the bulla ethmoidalis, and partly hidden by the inferior end of the uncinate process, is the maxillary hiatus (or ostium maxillare, or maxillary sinus ostium, or maxillary ostium, or opening from the maxillary sinus); in a frontal section this opening is seen to be placed near the roof of the sinus.

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