Bone
Ethmoid bone
Between the orbits and nose
High-yield
The cribriform plate transmits the olfactory nerves (CN I); fracture can cause CSF rhinorrhea and anosmia.
Overview
A light, spongy bone forming the medial orbital walls, the roof of the nasal cavity, and part of the nasal septum, and containing the ethmoidal air cells.
Reference facts
- Bone type
- Irregular
- Key landmarks
- Cribriform plate; Crista galli; Perpendicular plate; Superior and middle nasal conchae; Ethmoidal air cells
- Articulations
- Frontal; Sphenoid; Nasal, lacrimal, maxilla, palatine, vomer bones
Frequently asked questions
What type of bone is the ethmoid bone?
The ethmoid bone is an irregular bone.
What does the ethmoid bone articulate with?
The ethmoid bone articulates with the frontal; Sphenoid; Nasal, lacrimal, maxilla, palatine, vomer bones.
What are the key landmarks of the ethmoid bone?
Key landmarks of the ethmoid bone include the cribriform plate; Crista galli; Perpendicular plate; Superior and middle nasal conchae; Ethmoidal air cells.