Ethmoid
Cribriform plate
(L. a sieve)
Crista galli
(L. crest)
attachments - falx cerebri
Olfactory foramina
function - transmit the olfactory nerve
Perpendicular plate
Ethmoidal labyrinths
Air cells
Orbital plate
Anterior ethmoidal foramen
function - transmits the anterior ethmoidal nerve, artery, and vein
Posterior ethmoidal foramen
function - transmits the posterior ethmoidal nerve, artery, and vein
Medial surface
Superior concha
(L. shell)
Middle concha
Bulla ethmoidalis
(L. bubble)