Anterior nasal aperture

Anterior nasal aperture

Infobox Anatomy
Name = PAGENAME
Latin = a. piriformis
GraySubject = 47
GrayPage = 196


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DorlandsPre = a_51
DorlandsSuf = 12144737
The Anterior Nasal Aperture (or piriform/pyriform aperture) is a heart-shaped or pyriform opening, whose long axis is vertical, and narrow end upward; in the recent state it is much contracted by the lateral and alar cartilages of the nose.

It is bounded above by the inferior borders of the nasal bones; laterally by the thin, sharp margins which separate the anterior from the nasal surfaces of the maxillæ; and below by the same borders, where they curve medialward to join each other at the anterior nasal spine.


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Look at other dictionaries:

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  • Posterior nasal apertures — Lateral wall of nasal cavity. Dissection of the muscles of the palate …   Wikipedia

  • piriform aperture — n the anterior opening of the nasal cavities in the skull * * * apertura piriformis …   Medical dictionary

  • pyriform aperture — noun : the anterior opening of the nasal cavities in the skull …   Useful english dictionary

  • apertura piriformis — [TA] piriform aperture: the anterior end of the bony nasal opening, connecting the external nose with the skull; called also anterior nasal aperture and base of nose …   Medical dictionary

  • incisura nasalis maxillae — [TA] nasal notch of maxilla: the large notch in the anterior border of the maxilla that forms the lateral and inferior margins of the anterior nasal aperture …   Medical dictionary

  • Subnasal — Sub*na sal, a. (Anat.) Situated under the nose; as, the subnasal point, or the middle point of the inferior border of the anterior nasal aperture. [1913 Webster] …   The Collaborative International Dictionary of English

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