Posterior ethmoidal artery
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. It is smaller than the anterior ethmoidal artery.''''''
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] to reach, enter and traverse the posterior ethmoidal canal.Branches
Meningeal branchIt 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.