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ethmoid sinus
(redirected from Ethmoidal cells)

   Also found in: Dictionary/thesaurus, Wikipedia 0.01 sec.
ethmoid sinus,
n one of the facial cavities, located beneath the nasal bridge, through which air flows.

ethmoid
1. sievelike; cribriform.
2. the ethmoid bone.

ethmoid bone
the sievelike bone that forms a roof for the nasal fossae and part of the floor of the rostral cranial fossa. See also Table 10.
ethmoid sinus
see concha.


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Most involved the frontal sinus, although the maxillary sinus, ethmoidal cells, and sphenoidal sinus can also be affected.
According to Stammberger, they usually originate much more frequently in fissures and narrow spaces of the ethmoid than from ethmoidal cells themselves.
 
 
 
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