choana

(redirected from posterior nasal aperture)
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choana

(ˈkəʊənə)
n
a nasal opening situated towards the back of the nasal cavity in vertebrates
References in periodicals archive ?
DISCUSSION: Choanal atresia is a congenital obstruction of posterior nasal aperture or choana which is due to persistence of buccopharyngeal membrane and may be bony, membranous or mixed.
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