Anatomy of the ethmoid sinus.
The anatomy of the ethmoid sinus is complex and variable. The organization of the pneumatic cells, their drainage, and their relation to important adjacent structures are described and illustrated.
D005004:Ethmoid Bone / Q000033:anatomy & histology; D005005:Ethmoid Sinus / Q000033:anatomy & histology* / Q000196:embryology; D006801:Humans; D009915:Orbit / Q000033:anatomy & histology; D014420:Turbinates / Q000033:anatomy & histology