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Anterior Ethmoidal Artery
Cardiovascular System

Anterior Ethmoidal Artery

Arteria ethmoidea anterior

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Quick Facts

Origin: Ophthalmic artery.

Course: Passes within the anterior ethmoidal canal and enters the anterior cranial fossa via the anterior ethmoidal foramen.

Branches: Anterior meningeal, anterior septal, and anterior lateral nasal branches.

Supplied Structures: Anterior ethmoidal cells, frontal sinus, dura mater, and nose.

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Origin

The anterior ethmoidal artery arises from the ophthalmic artery as it passes anteromedially in the orbital cavity.

Course

The anterior ethmoidal artery passes medially a short distance and enters the anterior ethmoidal canal. It then exits the canal into the anterior cranial fossa via the anterior ethmoidal foramen, just at the anterior end of the lateral edge of the cribriform plate.

Branches

The anterior ethmoidal artery has ramifications that arise both in the anterior ethmoidal canal (extracranially) and after it emerges from the anterior ethmoidal foramen (intracranially).

Supplied Structures

The extracranial ramifications of the anterior ethmoidal artery supply the nasal cavity and septum, as well as the anterior ethmoidal cells and frontal sinus. The intracranial ramifications help supply the dura mater of the anterior cranial fossa.

References

Pamir, M. N., Black, P. M. L. & Fahlbusch, R. (2010) Meningiomas: A Comprehensive Text. Saunders/Elsevier.

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Anterior Ethmoidal Artery

ScienceDirect image

The anterior ethmoidal artery and posterior ethmoidal arteries are branches of the ophthalmic artery and supply the roof of the nasal cavity.

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