Also found in: Dictionary, Encyclopedia.


 [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 ?
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.
mallei in lung and choanae specimens was examined by using standard culturing techniques as described by Wittig et al.
The letters in Charge stand for: 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.
Vocal slits large, extending from beneath postero-lateral margin of tongue to near jaw angle; tongue with a shallow posterior notch; vomerine teeth in two well-separated, transverse rows between posterior halves of obliquely elliptical choanae.
Tongue longer than wide, oval, entire or slightly notched on its posterior end; posterior 3/5 of tongue not adherent to floor of mouth; choanae rounded, concealed or not by palatal shelf of maxillary arch; maxilla and premaxilla toothed; teeth pedicelate, medium-sized, robust and curved posteriad.
The polyp extended posteriorly to fill the nasopharynx, and it obstructed both choanae (figure 1).
Coloboma of the eye Heart malformations Atresia of the Choanae (nasal) Retardation of growth and/or development Genital Hypoplasia Ear anomalies 2004 Parkade Blvd.
Flexible endoscopy revealed a 90% obstruction of the choanae secondary to adenoid hypertrophy.
Six weeks later, the child was brought back to the operating room for a dilation procedure, which confirmed wide patency of both choanae (figure 3).
Endoscopy confirmed that the mass had obstructed the right and left choanae.
He then demonstrated this remarkable lingual dexterity by easily maneuvering his anterior tongue behind his soft palate, into his nasopharynx, and then through both his posterior choanae (figure, A-D).