Ethmoid bone
| Ethmoid bone | |
|---|---|
Ethmoid inside the orbit (brown) | |
Animation of the ethmoid bone | |
| Details | |
| Identifiers | |
| Latin | os ethmoidale |
| MeSH | D005004 |
| TA98 | A02.1.07.001 |
| TA2 | 721 |
| FMA | 52740 |
| Anatomical terms of bone | |
The ethmoid bone (/ˈɛθmɔɪd/;[1][2] from Ancient Greek: ἡθμός, romanized: hēthmós, lit. 'sieve') is an unpaired bone in the skull that separates the nasal cavity from the brain. It is located at the roof of the nose, between the two orbits. The cubical (cube-shaped) bone is lightweight due to a spongy construction. The ethmoid bone is one of the bones that make up the orbit of the eye.
- ^ OED 2nd edition, 1989 as /ˈεθmɔɪd/.
- ^ Entry "ethmoid" in Merriam-Webster Online Dictionary.