Ethmoid sinus
Air-filled space near the nasal cavity / From Wikipedia, the free encyclopedia
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The ethmoid sinuses or ethmoid air cells of the ethmoid bone are one of the four paired paranasal sinuses.[1] Unlike the other three pairs of paranasal sinuses which consist of one or two large cavities, the ethmoidal sinuses entail a number of small air-filled cavities ("air cells").[2] The cells are located within the lateral mass (labyrinth) of each ethmoid bone and are variable in both size and number.[1] The cells are grouped into anterior, middle, and posterior groups; the groups differ in their drainage modalities,[2] though all ultimately drain into either the superior or the middle nasal meatus[3] of the lateral wall of the nasal cavity.
Ethmoid sinus | |
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Details | |
Nerve | posterior ethmoidal nerve |
Identifiers | |
Latin | cellulae ethmoidales, labyrinthi ethmoidales |
MeSH | D005005 |
TA98 | A06.1.03.005 |
TA2 | 3180 |
FMA | 84115 |
Anatomical terms of bone |