choana


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choana

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

cho·a·na

, pl.

cho·a·nae

(kō'an-ă, kō'an-ē), Avoid the mispronunciation choa'na. Avoid the redundant phrase posterior choana(e).
The right or left opening from the nasal cavity into the nasopharynx.
[Mod. L. fr. G. choanē, a funnel]

choana

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

choana

[kō′ənə] pl. choanae
1 a funnel-shaped channel.
2 See posterior nares.

cho·a·na

, pl. choanae (kō'ă-nă, -nē)
The opening into the nasopharynx of the nasal cavity on either side. usage note Often incorrectly called posterior choana(e).
[Mod. L. fr. G. choanē, a funnel]

choana

A funnel-shaped opening, especially one of the internal openings of the nose into the PHARYNX.

cho·a·na

, pl. choanae (kō'ă-nă, -nē)
The right or left opening from the nasal cavity into the nasopharynx.
Synonym(s): apertura nasalis posterior.
[Mod. L. fr. G. choanē, a funnel]

choana

pl. choanae [L.]
1. any funnel-shaped cavity or infundibulum.
2. choanae, the paired openings between the nasal cavity and the nasopharynx.
References in periodicals archive ?
DISCUSSION: Choana atresia occurs as a result of developmental error where in the nasobuccal membrane fails to rupture in 5th or 6th week of intra uterine life or due to abnormal neural crest migration.
The foreign body was completely removed in piece meal and a big piece was pushed down from the choana into the nasopharynx and retrieved through oral cavity.
11,15,16) In this macaw, lymphoma was found throughout the body, including the liver, spleen, kidneys, eyes, gastrointestinal tract, pancreas, and choana.
Mass was filling entire ethmoid and choana on right side and pushing the lateral nasal wall more laterally on right side with complete obstruction of right osteomeatal complex.
8-cm height of cylinder was contoured at the lumen of the choana and defined as the PTV since a thermoluminescent dosimetry chip (TLD) (University of Wisconsin-Madison Radiation Calibration Laboratory, Madison, WI, USA) was placed in this region.
DNE examination revealed that the polypoidal mass was filling the right nasal cavity and choana.
1) The posterior septal branch of the sphenopalatine artery, also known as the nasoseptal branch, passes horizontally in the lateral-medial direction between the natural ostium of the sphenoid sinus and the choana (figure).
Several white plaques were present on the oral mucosa around the choana, and yellow nodules were present on the tongue.
It passes through the ostium of the sinus into the choana and from there into posterior nasopharynx.
The lesion had arisen from the mucosa of the left eustachian tube orifice, and it extended into the left choana and barely crossed the midline.
Mucoid debris was flushed through the choana, and fluid also exited the fistula near the right commissure, confirming the connection between the sinuses and periorbital spaces.
On posterior rhinoscopy: A grayish white globular polypoidal mass filling posterior choana and extending into the nasopharynx was seen.