Nose

(nbz). The special organ of the sense of smell. It is also a ociated in the performance of phonation and respiration. The anterior or external entrance is termed the anterior nares, and comprises the nostrils. It is lined throughout by a delicate mucosa termed the Schneiderian membrane, in the upper portion of which the terminations of the olfactory nerves are distributed. N. -bleed. See Epistaxis. N., Bottle, an hypertrophied condition of the nose with a varicose condition of its veins, usually a ociated with alcoholism. N. -brain, the olfactory lobes of the brain; the rhinencephalon. Transverse Section of the Nasal Fo ae 1. Nasal septum. 2. Anterior extremity of middle turbinated bone. 3. Middle meatus. 4. Section of inferior turbinated bone. 5. Inferior meatus. 6. Lacrymal canal. 7. Canaliculi. 8. Nasal canal. 9. Section of reflected mucous membrane. 10. Maxillary sinus or antrum of High more. N., Bridge of, the prominence formed by the junction of the nasal bones. N. -cavities, the nasal fo te. N.cough, a reflex trigeminal cough due to irritation of the nasal mucosa. N. -gla es, eye-gla es held on the nose by a spring; a pince-nez. N.-hole, a nostril. N. -piece, a mechanical device to be attached to a microscope for holding two, three, or four objectives. It is screwed into the object-end of the tube of the microscope. N., Tench's, a name for the external os uteri. N. -tru , an instrument for keeping the nasal bones in place after dislocation. N., Wings of, the bulging borders of the nostril, formed by folds of skin enclosing adipose and fibro-connective ti ue.