Maxillary hiatus
| Maxillary hiatus | |
|---|---|
| File:Gray192.png Medial wall of left orbit. | |
| File:Gray158.png Left maxilla. Nasal surface. | |
| Details | |
| Identifiers | |
| Latin | hiatus maxillaris, ostium maxillare |
| TA98 | Lua error in Module:Wikidata at line 746: attempt to index field 'wikibase' (a nil value). |
| TH | {{#property:P1694}} |
| TE | {{#property:P1693}} |
| FMA | {{#property:P1402}} |
| Anatomical terminology [[[d:Lua error in Module:Wikidata at line 865: attempt to index field 'wikibase' (a nil value).|edit on Wikidata]]] | |
The maxillary hiatus (also known as maxillary sinus ostium, maxillary ostium, or opening from the maxillary sinus)[citation needed] is the opening of a maxillary sinus into the middle nasal meatus of the nasal cavity. It is situated superoposteriorly upon the lateral nasal wall, opening into the nasal cavity at the posterior portion of the ethmoidal infundibulum.[1] Its opening in the maxillary sinus is present upon the superior part of the medial wall of the sinus[2][3] near the roof of the sinus;[4] because of the position, gravity cannot drain the maxillary sinus contents when the head is erect.[2][3]
An accessory maxillary hiatus may be present either anterior or posterior to the inferior portion of the uncinate process of ethmoid bone.[1]
Anatomy
[edit | edit source]It measures 2–4 mm in diameter[1] with an average diameter of 2.4 mm.[2][3]
It opens into the nasal cavity inferior to the bulla ethmoidalis, and is partly obscured by the inferior end of the uncinate process of ethmoid bone.[4]
The bone window of this aperture itself is much larger, but the actual opening is much reduced[3] by the following: the uncinate process of the ethmoid superiorly, the ethmoidal process of inferior nasal concha inferiorly, the perpendicular plate of palatine bone posteriorly, and a small part of the lacrimal bone anteriorly and superiorly,[4] as well as by the adjacent soft tissues.[3]
Additional images
[edit | edit source]-
Ethmoid bone
References
[edit | edit source]- ^ a b c Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b c Human Anatomy, Jacobs, Elsevier, 2008, page 209-210
- ^ a b c d e Bell, G.W., et al. Maxillary sinus disease: diagnosis and treatment, British Dental Journal 210, 113 - 118 (2011) at http://www.nature.com/bdj/journal/v210/n3/full/sj.bdj.2011.47.html
- ^ a b c Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
Public domain This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)
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