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 [ko´ah-nah] (pl. cho´anae) (L.)
2. [pl.] the paired openings between the nasal cavity and the nasopharynx.


(kō'an-ē), [TA]
Plural of choana.


the internal nostrils which open into the roof of the mouth in all air-breathing vertebrates.

choanae (kō·anˑ·ā),

n the large openings over the hard palate through which air leaves the nose.
References in periodicals archive ?
All patients complained of classic symptoms of chronic nasal obstruction and had an estimated > 90% adenoid obstruction of the choanae as determined with primary nasal endoscopy.
The common nasal meatus in Kenguri sheep extended from vestibule to choanae (Fig.
An exogenous nidus is usually a foreign body that has been inserted into the nasal cavity accidentally (occurring more frequently in children than in adults), or one that may have reached the posterior choanae through forceful vomiting or coughing.
Although this stork underwent a thorough physical examination, because of its attitude and size, good visualization of the choanae was not possible in the awake bird.
Choanae rounded, not concealed by palatal shelf of maxillary arch; dentigerous processes of vomers prominent, oblique and moderately separated from each other, median and posterior to choanae, each bearing row of 4-7 teeth; tongue oval, notched posteriorly; 2/3 of its extension adherent to floor of mouth; males with vocal slits and subgular vocal sac; long vocal slits, lateral to tongue.
Considering the upper airway, CT virtual endoscopy of the nasopharynx from a posterior view privides visualisation of the eustachian tube openings in reference to the choanae and nasopharyngeal walls; an area difficult to appreciate with conventional CT.
They are C - Coloboma of the eye, H - Heart defects, A - Atresia of the choanae, R - Retardation of growth, G - Genital and/or urinary defects and E - Ear anomalies.
In the choanae and nasal septae, stellate scars, ulcers, and honeycomb necrotic patches covered with yellow pus (Figure 1, panel B) were seen.
After seeing 13 consultants, at the age of 14 months Jamie was also diagnosed with profound deafness and a severe form of Charge syndrome (Coloboma of the eye, Heart defects, Atresia of the choanae, Retardation of growth and/or development, Genital and/or urinary abnormalities, and Ear abnormalities and deafness).
CHARGE syndrome; CHARGE stands for coloboma of the eye, heart defects, atresia of the nasal choanae, retardation of growth and/or development, genital and/or urinary abnormalities, and ear abnormalities and deafness).
The actual length and the ideal length were each measured at the piriform aperture, at the choanae, at half the distance from the tip of the nose to the piriform aperture, and at half the distance from the piriform aperture to the choanae (figure).
5 cm reddish space-occupying lesion, with smooth surface overlapping 2/3 of both choanae.