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nostril

  (nŏs'trəl) pronunciation
n.

Either of the external openings of the nose; a naris.

[Middle English nostrille, from Old English nosthyrl : nosu, nose + thyrl, hole.]


 
 
Veterinary Dictionary: nostril

Either of the two apertures (nares) of the nose that lead into the nasal cavity. See also nasal cavity.

  • n. dilatation — accompanies dyspnea, is also present in tetanus as part of the generalized muscular tetany.
  • false n. — a blind pouch of skin dorsal to the true nostril in the horse. Called also nasal diverticulum.
  • false n. cyst — developmental abnormality in the false nostril of a horse.
  • n. fly — see oestrus ovis.
  • hemorrhage from n. — see epistaxis.
  • regurgitation from n. — a common finding in food animals as part of a syndrome of esophageal obstruction; also in horses with gastric dilatation and cows with severe rumen distention; also occurs in recumbent ruminants with motor paralysis as in milk fever or general anesthesia.
  • n. vibrissae — the special tactile hairs around the nostrils.
 
Wikipedia: nostril
"Nares" redirects here. For information on the nares of a beak, see Beak.
Human nostrils
Enlarge
Human nostrils
A horse's snout. Note the prominent nostrils.
Enlarge
A horse's snout. Note the prominent nostrils.

A nostril (or naris, pl. nares) is one of the two channels of the nose, from the point where they bifurcate to the external opening. In birds and mammals, they contain branched bones or cartilages called turbinates, whose function is to warm air on inhalation and remove moisture on exhalation. Fish do not breathe through their noses, but they do have two small holes used for smelling which may be called nostrils.

The Procellariiformes are distinguished from other birds by having tubular extensions of their nostrils.

In humans, the nasal cycle is the normal ultradian cycle of each nostril's blood vessels becoming engorged in swelling, then shrinking. During the course of a day, they will switch over approximately every four hours or so, meaning that only one nostril is used at any one time.[1]

References

  1. ^ Nasal Obstruction

External links

General anatomy of head and neck - head
Face/Occiput Forehead • Eye • Ear • Temple • Cheek • Chin
External nose Nostril • Nasal septum • Cartilages (Accessory nasal, of the septum, Greater alar, Lateral nasal, Lesser alar, Vomeronasal)  • Olfactory glands
Nasal cavity Choana • Turbinate • Sphenoethmoidal recess • Ethmoid bulla • Hiatus semilunaris • Ostium maxillare • Inferior meatus • Vomeronasal organ • Paranasal sinus
Mouth/oral cavity Lip • Philtrum • Jaw • Pterygomandibular raphe
Teeth Permanent (Incisor, Canine, Premolar, Molar)  • Deciduous
Tongue Plica fimbriata • Median sulcus • Foramen cecum • Terminal sulcus • Frenulum linguae • Anterior tongue • Posterior tongue
Palate/roof of mouth Hard palate • Soft palate • Palatine raphe • Incisive papilla • Uvula • Pharyngeal recess • Arches: (Palatoglossal • Palatopharyngeal)
Salivary glands (Parotid • Sublingual • Submandibular) • Ducts: Submandibular • Parotid
fascia Masseteric fascia • Temporal fascia • Galea aponeurotica • Scalp

This entry is from Wikipedia, the leading user-contributed encyclopedia. It may not have been reviewed by professional editors (see full disclaimer)

 
Translations: Translations for: Nostril

Dansk (Danish)
n. - næsebor

Nederlands (Dutch)
neusgat, neusvleugel

Français (French)
n. - narine, naseau

Deutsch (German)
n. - Nasenloch, Nüster

Ελληνική (Greek)
n. - ρουθούνι

Italiano (Italian)
narice

Português (Portuguese)
n. - narina (f)

Русский (Russian)
ноздря

Español (Spanish)
n. - ventana de la nariz, orificio nasal

Svenska (Swedish)
n. - näsborre

中文（简体） (Chinese (Simplified))
鼻孔

中文（繁體） (Chinese (Traditional))
n. - 鼻孔

한국어 (Korean)
n. - 콧구멍

日本語 (Japanese)
n. - 鼻の穴

العربيه (Arabic)
‏(الاسم) فتحه الانف‏

עברית (Hebrew)
n. - ‮נחיר‬

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Best of the Web: nostril

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American Sign Language
commtechlab.msu.edu
 
 
 

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Copyrights:

Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2007. Published by Houghton Mifflin Company. All rights reserved.  Read more
Veterinary Dictionary. Saunders Comprehensive Veterinary Dictionary 3rd Edition. Copyright © 2007 by D.C. Blood, V.P. Studdert and C.C. Gay, Elsevier. All rights reserved.  Read more
Wikipedia. This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Nostril".  Read more
Translations. Copyright © 2007, WizCom Technologies Ltd. All rights reserved.  Read more

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