pyriform aperture

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The pyriform or nasal aperture, is the pear-shaped bony inlet of the nose formed by the nasal and maxillary bones. It forms the boundary between the anterior nasal vestibule (of the nasal cavity) and the posterior nasal cavity proper. The maxillary spines mark the inferior margin of the pyriform aperture.

See also

Siehe auch:
Assoziationen und Differentialdiagnosen zu Apertura piriformis:
Stenose der
Apertura piriformis
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