Posterior ethmoidal artery

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Posterior ethmoidal artery
The ophthalmic artery and its branches. (Anterior and posterior ethmoid labeled at left.)
Source Ophthalmic artery
Branches 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
Latin Arteria ethmoidalis posterior
TA A12.2.06.043
FMA 49989
Anatomical terminology

The posterior ethmoidal artery is an artery of the head which supplies the nasal septum. It is smaller than the anterior ethmoidal artery.


Once branching from the ophthalmic artery, it passes between the upper border of the medial rectus muscle and superior oblique muscle to enter the posterior ethmoidal canal. It exits into the nasal cavity to supply posterior ethmoidal cells and nasal septum; here it anastomoses with the sphenopalatine artery.

There is often a meningeal branch to the dura mater while it is still contained within the cranium.


This artery supplies the posterior ethmoidal air sinuses, dura mater of the anterior cranial fossa, and the upper part of the nasal mucosa of the nasal septum.


This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

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