| NAR | nasal airway resistance; National Association for Retarded [Children, Citizens]; no action required |
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| NAS | nasal; National Academy of Sciences; National Association of Sanitarians; neonatal airleak syndrome;... |
| N-CPAP, | n-CPAP nasal continuous positive airway pressure |
| ND | Doctor of Naturopathy; nasal deformity; natural death; Naval Dispensary; neonatal death; neoplastic ... |
| NSR | nasal septal reconstruction; nonspecific reaction; normal sinus rhythm; no sign of recurrence; not s... |
| medial nasal primordium | An ectodermally covered mesenchymal swelling lying medial to the olfactory placode or pit in the embryo. Synonym: medial nasal fold, medial nasal primordium, medial nasal process. (05 Mar 2000) |
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| medial nasal process | An ectodermally covered mesenchymal swelling lying medial to the olfactory placode or pit in the embryo. Synonym: medial nasal fold, medial nasal primordium, medial nasal process. (05 Mar 2000) |
| medial nasal prominence | An ectodermally covered mesenchymal swelling lying medial to the olfactory placode or pit in the embryo. Synonym: medial nasal fold, medial nasal primordium, medial nasal process. (05 Mar 2000) |
| membranous part of nasal septum | The small portion of the nasal septum anterior to the portion supported by the cartilage of the nasal septum. Synonym: pars membranacea septi nasi, membranous septum. (05 Mar 2000) |
| Ronne's nasal step | A nasal visual field defect with one margin corresponding to the retinal horizontal medium; seen in glaucoma. (05 Mar 2000) |
| mobile part of nasal septum | The anterior movable part of the nasal septum formed by the medial crus of the greater alar cartilage on each side. Synonym: pars mobilis septi nasi, septum mobile nasi. (05 Mar 2000) |
| posterior inferior nasal branches of greater palatine nerve | <anatomy, nerve> Branches of greater palatine nerve to posterior inferior lateral wall of nasal cavity, including posterior aspect of mucosa over posterior portion of inferior nasal concha and meatus; may arise independently from pterygopalatine ganglion. Synonym: rami nasales posteriores inferiores nervi palatini majoris. (05 Mar 2000) |
| posterior lateral nasal arteries | Branches of the sphenopalatine artery that supply the posterior parts of the conchae and lateral nasal wall. Synonym: arteriae nasales posteriores laterales. (05 Mar 2000) |
| posterior nasal spine | The sharp posterior extremity of the nasal crest of the hard palate. Synonym: spina nasalis posterior, posterior palatine spine. (05 Mar 2000) |
| posterior superior lateral nasal branches of pterygopalatine ganglion | Branches of pterygopalatine ganglion to upper posterior part of lateral wall of nasal cavity, including superior and middle nasal concha/meatuses, and posterior ethmoidal sinuses. Synonym: rami nasales posteriores superiores laterales ganglii pterygopalatini. (05 Mar 2000) |
| posterior superior medial nasal branches of pterygopalatine ganglion | Usually branches of the nasopalatine nerve to posterior superior nasal septum. Synonym: rami nasales posteriores superiores mediales ganglii pterygopalatini. (05 Mar 2000) |
| septum, nasal | The dividing wall that runs down the middle of the nose so that there are normally two sides to the nose, each ending in a nostril. (12 Dec 1998) |
| nasal | <anatomy> Pertaining to the nose. Origin: L. Nasalis (18 Nov 1997) |
| nasal arch | Bridge of the nose, the upward arching roof of the piriform aperture formed by the nasal processes of the maxilla of each side and the nasal bones between them. Eyeglasses rest centrally on various portions of this arch. (05 Mar 2000) |
| nasal atrium | The anterior expanded portion of the middle meatus of the nose, just above the vestibule. Synonym: atrium meatus medii, atrium. (05 Mar 2000) |