| Artery: Posterior ethmoidal artery | |
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| The ophthalmic artery and its branches. (Anterior and posterior ethmoid labeled at left.) | |
| Latin | a. ethmoidalis posterior |
| Gray's | subject #146 570 |
| 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 |
| Drain | ethmoidal veins |
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.
Contents |
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.
Supplies
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
- Posterior+ethmoidal+artery at eMedicine Dictionary
- lesson9 at The Anatomy Lesson by Wesley Norman (Georgetown University) (nasalseptumart)
- http://www.dartmouth.edu/~humananatomy/figures/chapter_45/45-6.HTM
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated.
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