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.[1] It is smaller than the anterior ethmoidal artery.[2]

Posterior ethmoidal artery
The ophthalmic artery and its branches. (Anterior and posterior ethmoid labeled at left.)
Details
SourceOphthalmic artery
BranchesMeningeal branch
Nasal branches
VeinEthmoidal veins
SuppliesPosterior ethmoidal cells
Posterior ethmoidal air sinuses
Dura mater of the anterior cranial fossa
Upper part of the nasal mucosa
Identifiers
LatinArteria ethmoidalis posterior
TA98A12.2.06.043
TA24492
FMA49989
Anatomical terminology

Anatomy

Origin

The posterior ethmoidal artery is an orbital branch of the ophthalmic artery.[1]

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.[3]

Branches

Meningeal branch

It emits a meningeal branch to the dura mater after entering the cranium.[2][3]

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.[4]

Distribution

This artery supplies the posterior ethmoidal air sinuses, the dura mater[2] of the anterior cranial fossa, and the upper part of the nasal mucosa of the nasal septum.

References
  1. Gupta, Neha; Motlagh, Mahsaw; Singh, Gurdeep (2022), "Anatomy, Head and Neck, Eye Arteries", StatPearls, Treasure Island (FL): StatPearls Publishing, PMID 30725748, retrieved 2022-12-27
  2. Gray, Henry (1918). Gray's Anatomy (20th ed.). p. 570.
  3. Standring, Susan (2020). Gray's Anatomy: The Anatomical Basis of Clinical Practice (42nd ed.). [New York]. p. 779. ISBN 978-0-7020-7707-4. OCLC 1201341621.{{cite book}}: CS1 maint: location missing publisher (link)
  4. Standring, Susan (2020). Gray's Anatomy: The Anatomical Basis of Clinical Practice (42nd ed.). [New York]. p. 779. ISBN 978-0-7020-7707-4. OCLC 1201341621.{{cite book}}: CS1 maint: location missing publisher (link)

Public domain This article incorporates text in the public domain from page 570 of the 20th edition of Gray's Anatomy (1918)

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