NUMBNESS 



386 



OCCLUSION 



source of cells from which spring all the precellular 

 fibers which end in the submaxillary ganglion. They 

 begin just before the caudal pole of the facial nu- 

 cleus and terminate at the frontal end of the mas- 

 seteric nucleus. N., Secondary. See Paranu- 

 cleus (Illus. Diet.). N., Siemerling's, the antero- 

 ventral nucleus of the anterior group of oculomotor 

 nuclei in the gray matter below the sylvian aqueduct. 

 N., Spitzka's, the central nucleus of the oculomotor 

 group in the gray matter below the sylvian aqueduct. 

 N., Staderini's, the nucleus intercalatus, an aggrega- 

 tion of ganglion cells situated between the dorsal 

 nucleus of the vagus nerve and that of the hypo- 

 glossal nerve. N., Sailing's. (See Illus. Diet.) 2. 

 The nucleus of the hypoglossal nerve in the fourth 

 ventricle. N., Stilling's Sacral, an island of 

 ganglion-cells in the sacral region of the spinal cord. 

 N., Styloid, a bony nodule contained in the cartilages 

 which unite the lesser cornua with the body of the 

 hyoid. N. subthalamicus, the subthalamus. N., 

 Superior (of the auditory nerve i. See .A". . Auditory 

 External. N. taeniaeformis. See Claustrum (Illus. 

 Diet). N., Three-grouped, N., Trifacial, N., 

 Trigeminal, two or three groups of nerve-cells 

 ventrad of the facial nucleus, below the lateral angle 

 of the fourth ventricle. N. of the Trapezium, the 

 superior olivary nucleus. N., Triple, the oculomotor 

 nucleus. N., Vagus. See under N., Accessorio- 

 vagogl>ssopharyngeal. N., Voit's. See Olive, 



-sory (i). N., Yellow (of the corpus striatum), 

 Lays' name for the terminal expansion of the superior 

 cerebellar peduncle in the striatum. N., Yolk-, a 

 cytoplasmic body, often made up of concentric layers, 

 found beside the germinal vesicle in the ova of amphi- 

 bians, arachnoids, and some other animals. 

 Numbness, Waking. Acroparesthesia. 



Nummulation ( nuvi-u-la' 'shun) [nummus, a coin]. 

 The aggregation of blood-corpuscles into rolls resem- 

 bling rolls of coin. Cf. Rouleau. 



Nutone [mS-ton). A nutritive tonic said to consist of 

 cod-liver oil, malt extract, beef juice, and glycerin 

 emulsion, each 25 c r ; calcium hypophosphite, I grain ; 

 sodium hypophosphite, I grain; tincture of nux vom- 

 ica, I drop in each teaspoonful. 



Nutrabin (nu'-trab-in). A dietetic prepared from pro- 

 teids of milk and beef; a cocoa-colored powder flavored 

 with vanilla. 



Nutrolactis \mi tro-lak'-tis). A proprietary galactagog 

 said to consist of fluid extracts of Galega officinalis, L. , 

 and Tephrosia appolinea, Lk. 



Nutrose (nu'-troz). Neutral casein sodium, a soluble 

 powder containing 13.8^ of nitrogen, used as a food 

 in intestinal disorders. 



Nyctalgia [n c, night; d/;oc, pain]. Pain which oc- 

 curs chiefly during the night ; e.g., osteocopic pains 

 of syphilis. 



Nyctalope (nik'-tal-op). One suffering from nyctal- 

 opia. 



Nycterine (nik'-tur-en) [iTurcpiroc, nightly]. I. Oc- 

 curring in the night. 2. Obscure. 



Nycturia (nik-tu'-re-nh) [it;, night; oipov, urine]. 

 Nocturnal urinary incontinence. 



Nymphectomy {nim-fek 1 '-to-me) [viuoa, nymph; ektoutj, 

 excision]. Excision of the nymphse. 



Nymphfibulation [nimfib-u-la' -shun) [viuoa, nymph ; 

 fibula, a clasp]. The puncture and locking together 

 of the labia majora. 



Nystagmiform \ni- stag* -me- form) [i-wrra;. uoc, nodding 

 of the head; forma, form]. Resembling nystagmus. 



Nystagmus. ( See Illus. Diet. ) See Sign, Bard" s. 

 N., Cheyne's, a form of nystagmus in which the 

 oscillations of the eyeball have a marked rhythm. 





Oak. (See Illus. Diet.) O.-red, Grabowski's. See 

 Phlobaphene, under Oak-bark ( Illus. Diet.). O.-red, 

 Lowe's. O.-red, Oser's. See under Oak-bark (Il- 

 lus. Diet. ). 



Oarialgia o-ar-e-al'-je-ah). See Oaralgia ( Illus. Diet. ). 



Oat. (See Illus. Diet.) O.-cure. See under Treat- 

 ment. O. -jelly. See under Jelly. 



Obeliad {o-be'-li-ad). Toward the obelion. 



Object. (See Illus. Diet.) O. -glass, the objective 

 of a microscope. 



Objectify 1 ob-jekt'-e-fi) [objicere, to cast before]. In 

 psychology, to externalize a phantom, to see it as a 

 solid object in the waking world. 



Oblinition (ob-lin-ish'-on) [oblinere, to smear]. In- 

 unction. 



Obliquimeter {ob-liq-wim' '-et-ur) [obliauus, oblique ; 

 metare, to measure]. An instrument fitted with arms 

 employed to indicate the angle formed by comparing 

 the plane of the pelvic brim with the perpendicular 

 axis of the upright body [Truax]. 



Obsession. (See Illus. Diet.) O. dentaire (Galippe, 

 1S91), topoalgia, pseudoneuralgia, or neurasthenic neu- 

 ralgia erroneously attributed to the teeth. 



Obstetricy (ob-stet'-ris-e). Blundell's narne for ob- 

 stetrics. 



Obturation (ob-tu-ra / -shun) [obturare, to stop up]. 

 The stopping-up or closing of an opening or passage. 



Obturator. ( See Illus. Diet. ) In dentistry, an instru- 

 ment used to cover openings in the hard or soft palate. 

 When made of flexible material, to follow the move- 

 ments of the soft palate and to obliterate openings or 

 spaces in it, it is called an artificial velum. 



Occalcarine (ok-kat y -kar-in). See Occipitoca'carine. 



Occipito. (See Illus. Diet.) O. anterior, applied to 

 the position of the fetus which has the occiput directed 

 ventrad. O.atlantal, O.atlantoid. See O.-atloidean 

 (Illus. Diet.). O.calcarine, pertaining to the occi- 

 put and calcar. O. central, relating to the occipital 

 lobe and central gyri. O. cervical, relating to the 

 occiput and the neck. O. lateral. See Occipitocotyloid 

 (Illus. Diet.). O. meningeal, relating to the occipi- 

 tal bone and the dura. O. petrosal, relating to the 

 occipital bone and the petrosa. O. temporal, relat- 

 ing to both the occipital and the temporal bones. 



Occluding (ok-lu'-ding) [occludere, to shut or close up]. 

 Applied to the grinding surfaces of molars and bicus- 

 pids. 



Occlusal (ok-lu'-sal). See Occluding. 



Occlusion. ( See Illus. Diet. ) 3. The full meeting 

 or contact in a position of rest of the masticating sur- 



