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.