In the center of the ethmoid bone, between the ethmoidal labyrinth, is the perpendicular plate, which forms the upper part of the bony nasal septum; the lower part of your nasal septum is formed ...

The anterior ethmoidal artery (AEA) plays a critical role in the vascular supply to the anterior cranial fossa and the paranasal sinuses. Its course through the ethmoidal labyrinth is marked by ...