Anything passes through the anterior and posterior ethmoidal foramens
- Anterior ethmoidal foramen
- The anterior ethmoidal nerve, artery and vein enter the cranial cavity through this foramen. It then passes into the nasal cavity through anterior and medial foramens of the cribriform plate.
- Posterior ethmoidal foramen
- The posterior ethmoidal artery and vein pass through here to the ethmoidal cells.