Anterior Ethmoidal Artery

Anterior ethmoidal artery, also known as the anterior ethmoid artery, is a branch of the ophthalmic artery. It supplies the ethmoidal cells, frontal sinus and the lateral nasal wall.


Anterior ethmoidal artery originates as a branch of the ophthalmic artery in the orbit. It then accompanies the nasociliary nerve through the anterior ethmoidal canal to enter the nose.

It then supplies the following structures;

  • Anterior and middle ethmoidal cells
  • Frontal sinus
  • Part of the lateral nasal wall


Anterior ethmoidal artery gives off a meningeal branch and nasal branches when entering the cranium.

  • Meningeal branch:
    It is also known as the anterior meningeal artery. It supplies the dura mater.
  • Nasal branches:
    These branches descent into the nasal cavity through the slit by the side of crista galli. They supply the lateral wall and septum of the nose. There is also a terminal branch that appears on the dorsum of the nose between the nasal bone and the lateral cartilage.