Posterior ethmoidal artery
{{Short description|Cranial artery}}
{{Infobox artery
| Name = Posterior ethmoidal artery
| Latin = arteria ethmoidalis posterior
| Image = Gray514.png
| Caption = The ophthalmic artery and its branches. (Anterior and posterior ethmoid labeled at left.)
| Image2 =
| Caption2 =
| BranchFrom = Ophthalmic artery
| BranchTo = Meningeal branch
Nasal branches
| Vein = Ethmoidal veins
| Supplies = Posterior ethmoidal cells
Posterior ethmoidal air sinuses
Dura mater of the anterior cranial fossa
Upper part of the nasal mucosa
}}
The posterior ethmoidal artery is an artery of the head which arises from the ophthalmic artery to supply the posterior ethmoidal air cells, and the meninges.{{Citation |last1=Gupta |first1=Neha |title=Anatomy, Head and Neck, Eye Arteries |date=2022 |url=http://www.ncbi.nlm.nih.gov/books/NBK537063/ |work=StatPearls |place=Treasure Island (FL) |publisher=StatPearls Publishing |pmid=30725748 |access-date=2022-12-27 |last2=Motlagh |first2=Mahsaw |last3=Singh |first3=Gurdeep}} It is smaller than the anterior ethmoidal artery.{{Cite book |last=Gray |first=Henry |url=https://archive.org/details/anatomyofhumanbo1918gray/page/570/mode/2up?view=theater |title=Gray's Anatomy |year=1918 |edition=20th |pages=570}}
Anatomy
= Origin =
The posterior ethmoidal artery is an orbital branch of the ophthalmic artery.
= Course and relations =
After branching from the ophthalmic artery, the posterior ethmoidal artery passes between the upper border of the medial rectus muscle and superior oblique muscle{{Citation needed|date=December 2022}} to reach, enter and traverse the posterior ethmoidal canal.{{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=42nd |location=[New York] |pages=779 |oclc=1201341621}}
= Branches =
Meningeal branch
It emits a meningeal branch to the dura mater after entering the cranium.
Nasal branches
It emits nasal branches that pass through the cribriform plate to reach the nasal cavity. The nasal branches form anastomoses with the sphenopalatine artery.{{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=42nd |location=[New York] |pages=779 |oclc=1201341621}}
= Distribution =
This artery supplies the posterior ethmoidal air sinuses, the dura mater of the anterior cranial fossa, and the upper part of the nasal mucosa of the nasal septum.{{Citation needed|date=December 2022}}
References
{{Reflist}}
{{Gray's}}
External links
- {{NormanAnatomy|lesson9}} ({{NormanAnatomyFig|nasalseptumart}})
- http://www.dartmouth.edu/~humananatomy/figures/chapter_45/45-6.HTM
{{Arteries of head and neck}}
{{Portal bar|Anatomy}}
{{Authority control}}