ethmoid bone

A bone in the skull that separates the nasal cavity from the brain. As such, it is located at the roof of the nose, between the two orbits. The cubical bone is lightweight due to a spongy construction. The ethmoid bone is one of the bones that makes up the orbit of the eye[WP]. Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the ethmoid bone is

A bone in the skull that separates the nasal cavity from the brain. As such, it is located at the roof of the nose, between the two orbits. The cubical bone is lightweight due to a spongy construction. The ethmoid bone is one of the bones that makes up the orbit of the eye[WP]. The atlas records it as a bone at the organ scale in the human body.

Where the ethmoid bone is

It sits in the head, within the skeletal system. Positioned deliberately as part of this species body plan.

What the ethmoid bone connects to

The atlas records 24 typed relationships for it, across 6 kinds of connection. part of axial skeletal system, basicranium and craniocervical region, and 4 more.

Supply and innervation

This dataset asserts no arterial supply, venous drainage or innervation for the ethmoid bone. Only a minority of structures carry those edges here, so an empty answer means nothing has been recorded — not that there is nothing to record.

Also called

Also recorded as ethmoid, ethmoidal bone and os ethmoidale. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0001679, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• Part of: axial skeletal system, basicranium, craniocervical region, facial skeleton, head and neurocranium, and 1 more.
• A kind of: anatomical structure, bone element, cranial bone and endochondral bone.
• contains: cribriform plate, crista galla of ethmoid bone, ethmoidal air cells of ethmoid bone, ethmoidal bulla of ethmoid bone, nasal concha of ethmoid bone and olfactory foramina of ethmoid bone, and 3 more.
• connects: ethmoidomaxillary suture and palatoethmoidal suture.
• contributes to morphology of: facial skeleton.
• Develops from: ethmoid bone primordium.

Questions

Where is the ethmoid bone?

It sits in the head, within the skeletal system. Positioned deliberately as part of this species body plan.

What does the ethmoid bone connect to?

Part of: axial skeletal system, basicranium, craniocervical region, facial skeleton, head and neurocranium, and 1 more.

Is the ethmoid bone the same in other species?

Leumas holds the same relationship vocabulary for every species it carries, so where another dataset records this structure you can put the two side by side on /compare.