What is an ethmoid bone?

The ethmoid bone is a small, spongy bone located at the roof of the nasal cavity and between the eyes. It plays a crucial role in forming the nasal septum and the orbits of the eyes while housing the ethmoid sinuses. This bone contains numerous small openings that allow for the passage of olfactory nerves, contributing to the sense of smell. Its complex structure also provides support and forms part of the cranial base.