| NSR | nasal septal reconstruction; nonspecific reaction; normal sinus rhythm; no sign of recurrence; not s... |
|---|---|
| NW | naked weight; nasal wash |
| PND | paroxysmal nocturnal dyspnea; partial neck dissection; postnasal drainage; postnasal drip; postnatal... |
| PNM | perinatal mortality; peripheral dysostosis, nasal hypoplasia, and mental retardation [syndrome]; per... |
| PNS | paraneoplastic syndrome; parasympathetic nervous system; partial nonprogressive stroke; peripheral n... |
| nasal myiasis | Fly larva invasion of the nasal passages, due most commonly in the U.S. To primary screw-worms, the larvae of Cochliomyia hominivorax, which develop in the nasal or aural cavity. (05 Mar 2000) |
|---|---|
| nasal nerve | <anatomy, nerve> A branch of the ophthalmic nerve in the superior orbital fissure, passing through the orbit, giving rise to the communicating branch to the ciliary ganglion, the long ciliary nerves, the posterior and anterior ethmoidal nerves, and terminating as the infratrochlear and nasal branches, which supply the mucous membrane of the nose, the skin of the tip of the nose, and the conjunctiva. Synonym: nervus nasociliaris, nasal nerve. (05 Mar 2000) |
| nasal notch | The notch in the medial border of the maxilla anteriorly which, with its fellow, forms most of the piriform opening of the nasal cavity. Synonym: incisura nasalis. (05 Mar 2000) |
| nasal obstruction | Any hindrance to the passage of air into and out of the nose. The obstruction may be in the nasal vestibule, fossae, or other areas of the nasal cavity. (12 Dec 1998) |
| nasal pits | The paired depressions formed when the nasal placodes come to lie below the general external contour of the developing face as a result of the rapid growth of the adjacent nasal elevations; the pit's are the primordia of the rostral portions of the nasal chambers. Synonym: olfactory pits. (05 Mar 2000) |
| nasal placodes | Paired ectodermal placode's which come to lie in the bottom of the olfactory pits as the pits are deepened by the growth of the surrounding medial and lateral nasal processes. Synonym: nasal placodes. (05 Mar 2000) |
| nasal point | <anatomy> The middle point of the nasofrontal suture. Origin: Nl, fr. L. Nasus nose. Source: Websters Dictionary (01 Mar 1998) |
| nasal polyp | <otolaryngology> A projection of the mucosa lining the nasal and paranasal sinuses that is rounded and elongated within the nasal cavity. A common cause for nasal airway obstruction in patients who suffer from allergic sinusitis. They are found more commonly in those with chronic allergic rhinitis or sinusitis. Large nasal polyps can interfere with nasal breathing and are often removed surgically to improve breathing and decrease chronic allergic symptoms. (27 Sep 1997) |
| nasal polyps | Focal accumulations of oedema fluid in the nasal mucosa accompanied by hyperplasia of the associated submucosal connective tissue. Polyps may be neoplasms, foci of inflammation, degenerative lesions, or malformations. (12 Dec 1998) |
| nasal process | The upward extension from the body of the maxilla, which articulates with the frontal bone. Synonym: nasal process, processus frontalis maxillae. (05 Mar 2000) |
| nasal provocation tests | Application of allergens to the nasal mucosa. Interpretation includes observation of nasal symptoms, rhinoscopy, and rhinomanometry. Nasal provocaton tests are used in the diagnosis of nasal hypersensitivity, including hay fever. (12 Dec 1998) |
| nasal reflex | Sneezing caused by irritation of the nasal mucous membrane. (05 Mar 2000) |
| nasal region | The region of the nose. Synonym: regio nasalis. (05 Mar 2000) |
| nasal ridge | An elevation on the lateral wall of the nasal cavity lying between the atrium of the middle meatus and the olfactory sulcus; it is formed by the mucous membrane covering the base of the ethmoidal crest of the maxilla. Synonym: nasal ridge. (05 Mar 2000) |
| nasal sacs | The deepened nasal pits that develop into the definitive nasal cavities. (05 Mar 2000) |