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ethmoid sinus

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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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1) Secretions from the frontal sinus and anterior ethmoid sinus usually follow the same route, proceeding anterior and inferior to the eustachian tube orifice and into the nasopharynx.
Facial pain or pressure is usually related to maxillary or ethmoid sinus disease.
Each ethmoid sinus is an air-space enclosed within the ethmoid bone.
 
 
 
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