| choana | The opening into the nasopharynx of the nasal cavity on either side. Synonym: isthmus pharyngonasalis, posterior naris, postnaris. Origin: Mod. L. Fr. G. Choane, a funnel (05 Mar 2000) |
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| choanal | Pertaining to a choana. (05 Mar 2000) |
| choanal atresia | Congenital bony or membranous occlusion of one or both choanae, due to failure of the embryonic bucconasal membrane to rupture. (12 Dec 1998) |
| choanal polyp | An antral-choanal polyp that extends into the nasopharynx; generally originates in the antrum. (05 Mar 2000) |
| choanate | Having a funnel, i.e., with a ring or collar. (05 Mar 2000) |
| choanoflagellate | A term, in the series used to describe developmental stages of the parasitic flagellates, denoting the "barleycorn" form of the flagellate in the genus Crithidia characterised by a collarlike extension surrounding the anterior and through which the single flagellum emerges. See: amastigote, epimastigote, promastigote, trypomastigote. Synonym: choanoflagellate, collared flagellate. Origin: G. Choane, a funnel, + mastix, whip (05 Mar 2000) |
| choanoid | Funnel-shaped. Synonym: infundibuliform. Origin: G. Choane, funnel, + eidos, resemblance (05 Mar 2000) |
| choanomastigote | A term, in the series used to describe developmental stages of the parasitic flagellates, denoting the "barleycorn" form of the flagellate in the genus Crithidia characterised by a collarlike extension surrounding the anterior and through which the single flagellum emerges. See: amastigote, epimastigote, promastigote, trypomastigote. Synonym: choanoflagellate, collared flagellate. Origin: G. Choane, a funnel, + mastix, whip (05 Mar 2000) |
| Choanotaenia infundibulum | An important species of cosmopolitan tapeworm of fowls, occurring in the small intestine and transmitted by houseflies and stableflies; related to Dipylidium, the double-pored dog tapeworm. Origin: G. Choane, a funnel, + L., fr. G. Tainia, tapeworm (05 Mar 2000) |
Synonyms : Atresias, Choanal, Choanal Atresias
| choanocyte |
any of the flagellated cells in sponges having a collar of cytoplasm around the flagellum; they maintain a flow of water through the body
Ãâó: wordnet.princeton.edu/perl/webwn
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| choanal atresia |
congenital bony or membranous occlusion of one or both choanae, due to failure of the embryonic bucconasal membrane to rupture. Cf. atretorrhinia.
Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| choana |
(Plural choanae) An opening between the nasal cavity and oropharynx (mouth) in birds and reptiles.
Ãâó: www.peteducation.com/dict_alpha_listing.cfm
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| choanal |
Petaining to the choana - the opening into the nasopharynx of the nasal cavity on either side.
Ãâó: aspin.asu.edu/geneinfo/glos-c.htm
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| choana |
This is the slit in palate of the bird's mouth. Unlike humans, this passage connects the bird's nasal passages with its mouth. When the bird closes its beak, its glottis closes this passage.
Ãâó: home.rochester.rr.com/thecaiques/glossary.htm
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| choan | any of the flagellated cells in sponges having a collar of cytoplasm around the flagellum |
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