Posterior ethmoidal artery

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Posterior ethmoidal artery
Gray514.png
The ophthalmic artery and its branches. (Anterior and posterior ethmoid labeled at left.)
Details
Latin Arteria ethmoidalis posterior
Supplies Posterior ethmoidal cells
Posterior ethmoidal air sinuses
Dura mater of the anterior cranial fossa
Upper part of the nasal mucosa
Source
Ophthalmic artery
Branches
Meningeal branch
Nasal branches
Ethmoidal veins
Identifiers
Gray's p.570
Dorlands
/Elsevier
a_61/12154258
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.

Course[edit]

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.

Supplies[edit]

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.

External links[edit]

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