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|Latin=bulla ethmoidalis}}
|Latin=bulla ethmoidalis}}
The '''ethmoid bulla''' (or '''ethmoidal bulla''') is a rounded elevation upon the lateral wall of the [[middle nasal meatus]] ([[nasal cavity]] inferior to the [[middle nasal concha]]) produced by one or more of the underlying middle [[ethmoidal cells|ethmoidal air cells]] (which open into the nasal cavity upon or above the ethmoidal bulla'''<ref name=":022" />'''{{Rp|page=374}}<ref name=":2242">{{Cite book |last=Standring |first=Susan |url=https://www.worldcat.org/oclc/1201341621 |title=Gray's Anatomy: The Anatomical Basis of Clinical Practice |year=2020 |isbn=978-0-7020-7707-4 |edition=42th |location=New York |pages=612 |oclc=1201341621}}</ref>).'''<ref name=":022">{{Cite book |last=Sinnatamby |first=Chummy S. |title=Last's Anatomy |vauthors= |publisher= |year=2011 |isbn=978-0-7295-3752-0 |edition=12th |pages=}}</ref>'''{{Rp|page=377}} It varies significantly based on the size of the underlying air cells.{{Citation needed|date=June 2023}}
The '''ethmoid bulla''' (or '''ethmoidal bulla''') is a rounded elevation upon the lateral wall of the [[middle nasal meatus]] ([[nasal cavity]] inferior to the [[middle nasal concha]]) produced by one or more of the underlying middle [[ethmoidal cells|ethmoidal air cells]] (which open into the nasal cavity upon or superior to the ethmoidal bulla'''<ref name=":022" />'''{{Rp|page=374}}<ref name=":2242">{{Cite book |last=Standring |first=Susan |url=https://www.worldcat.org/oclc/1201341621 |title=Gray's Anatomy: The Anatomical Basis of Clinical Practice |year=2020 |isbn=978-0-7020-7707-4 |edition=42th |location=New York |pages=612 |oclc=1201341621}}</ref>).'''<ref name=":022">{{Cite book |last=Sinnatamby |first=Chummy S. |title=Last's Anatomy |vauthors= |publisher= |year=2011 |isbn=978-0-7295-3752-0 |edition=12th |pages=}}</ref>'''{{Rp|page=377}} It varies significantly based on the size of the underlying air cells.'''<ref name=":02">{{Cite book |last=Gray |first=Henry |url=https://archive.org/details/anatomyofhumanbo1918gray/page/995/mode/2up?view=theater |title=Gray's Anatomy |year=1918 |edition=20th |location=995 |pages=1139}}</ref>'''


== Structure ==
== Structure ==

Revision as of 18:59, 3 July 2023

Ethmoid bulla
Details
Identifiers
Latinbulla ethmoidalis
TA98A06.1.02.026
A02.1.07.015
TA23150, 736
FMA57487
Anatomical terminology

The ethmoid bulla (or ethmoidal bulla) is a rounded elevation upon the lateral wall of the middle nasal meatus (nasal cavity inferior to the middle nasal concha) produced by one or more of the underlying middle ethmoidal air cells (which open into the nasal cavity upon or superior to the ethmoidal bulla[1]: 374 [2]).[1]: 377  It varies significantly based on the size of the underlying air cells.[3]

Structure

The ethmoid bulla is formed by is the largest and least variable of the middle ethmoidal air cells.[2] The size of the bulla varies with that of its contained cells. The bulla may be a pneumatised cell or a bony prominence found in middle meatus.[citation needed]

Relations

The hiatus semilunaris is situated (sources differ) inferior[4][5][6]/anterior[1]: 374  to the ethmoid bulla. The maxillary sinus also opens below the bulla.[4][5]

Development

The ethmoid bulla begins to develop between 8 weeks and 12 weeks of gestation.[5]

References

  1. ^ a b c Sinnatamby, Chummy S. (2011). Last's Anatomy (12th ed.). ISBN 978-0-7295-3752-0.
  2. ^ a b Standring, Susan (2020). Gray's Anatomy: The Anatomical Basis of Clinical Practice (42th ed.). New York. p. 612. ISBN 978-0-7020-7707-4. OCLC 1201341621.{{cite book}}: CS1 maint: location missing publisher (link)
  3. ^ Gray, Henry (1918). Gray's Anatomy (20th ed.). 995. p. 1139.{{cite book}}: CS1 maint: location (link) CS1 maint: location missing publisher (link)
  4. ^ a b Gray, Henry; Lewis, Warren H. (1918). Anatomy of the nose of the Human Body (20th Edition). p. 195.
  5. ^ a b c Wang, Rong-Guang; Jiang, Si-Chang (1997-01-01). "The Embryonic Development of the Human Ethmoid Labyrinth from 8-40 Weeks". Acta Oto-Laryngologica. 117 (1): 118–122. doi:10.3109/00016489709118002. ISSN 0001-6489.
  6. ^ Moore, Keith L.; Dalley, Arthur F.; Agur, Anne M. R. (2017). Essential Clinical Anatomy. Lippincott Williams & Wilkins. p. 967. ISBN 978-1496347213.