Posterior ethmoidal artery
- Posterior ethmoidal artery
Infobox Artery
Name = PAGENAME
Latin = a. ethmoidalis posterior
GraySubject = 146
GrayPage = 570
Caption = The ophthalmic artery and its branches. (Anterior and posterior ethmoid labeled at left.)
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
MeshName =
MeshNumber =
DorlandsPre = a_61
DorlandsSuf = 12154258
The posterior ethmoidal artery is an artery of the head. It is smaller than the anterior ethmoidal artery, branches off from the ophthalmic artery when it reaches the medial wall of the orbit.
Course
It passes between the upper border of the medial rectus muscle and superior oblique muscle to pass through the posterior ethmoidal canal, to supply posterior ethmoidal cells, and, entering the cranium
Branches
When it enters the cranium it gives off a meningeal branch to the dura mater, and nasal branches which descend into the nasal cavity through apertures in the cribriform plate, anastomosing with branches of the sphenopalatine.
upplies
This artery supplies the posterior ethmoidal air sinuses, dura mater of the anterior cranial fossa, and the upper part of the nasal mucosa.
External links
*
* (NormanAnatomyFig|nasalseptumart)
* http://www.dartmouth.edu/~humananatomy/figures/chapter_45/45-6.HTM
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