Glossary entry (derived from question below)
Swedish term or phrase:
koan
English translation:
posterior nasal aperture/choana
Swedish term
koan
3 +2 | posterior nasal aperture/choana | Tania McConaghy |
Proposed translations
posterior nasal aperture/choana
The choanae are the posterior apertures of the nose. Each choana is bounded medially by the vomer, inferiorly by the horizontal plate of the palatine bone, laterally by the medial pterygoid plate, and superiorly by the body of the sphenoid bone
The effect of nasopharyngeal pressures on a pliant Eustachian tube (Toynbee phenomenon) due to obstruction of the posterior nasal choanae by the adenoid mass was suggested as a possible cause of functional Eustachian tube obstruction.
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