posterior nares

posterior nares

a pair of posterior internal openings in the nasal cavity connecting it with the nasopharynx and allowing the inhalation and exhalation of air. Each is an oval aperture that measures about 2.5 cm vertically and is about 1.5 cm in diameter. Also called choanae. Compare anterior nares.
References in periodicals archive ?
Sample was collected with sterile cotton swabs by rotating the swabs gently for five times in both anterior nares avoiding posterior nares of the study participants so that the tip was entirely at the nasal osteum.
The nasal cavity compartments extended from anterior nares to posterior nares (choanae).
The nasal compartments of cavity extended from anterior nares to posterior nares (choanae) and continued caudally as nasopharynx.
The effectiveness of conventional packing of the anterior or posterior nares for the control of epistaxis in the posterior fornix of the inferior nasal meatus (a type of intractable posterior epistaxis) is reportedly unsatisfactory.
If no significant bleeding points were detected and accumulation of blood in the posterior nares was observed, intractable posterior epistaxis was suspected.
Anterior and posterior nares close to eye and to each other, internarial distance 7 to 13 times in snout length; anterior naris in short tube, posterior border of tube not reaching posterior naris when reflected; posterior naris oval, much larger than anterior naris, with long axis of oval running dorsoventrally.
The specimen can be collected by inserting a Dacron nasopharyngeal swab into the nostril to reach the posterior nares and leaving it in place for 10 seconds (FIGURE 2).
Stage IA: Tumor limited to the posterior nares and/or nasopharyngeal vault.
However, minor occurrences include large mucus filled polyps developing in posterior nares of cattle causing unilateral or bilateral obstruction (Radostits et al.
The snout is orange, with the posterior nasal opening in a small white spot, a similar spot just in fron of the eye, a median white stripe from the anterior interorbital region to the level of the posterior nares and another similar short stripe from the posterior interorbital region over the dorsum.
habrum the thin vertical red bar over the ends of the hypurals in freshly collected specimens, but has an open nasal capsule lacking anterior and posterior nares (vs.

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