WRINKLE 



1622 



XANTHO-KREATININ 



Wrinkle (ring' -hi). See Ruga. 



Wrisberg, Abdominal Brain of. The solar plexus. 

 W M Ansa of. See Ansa. W., Cartilages of. 

 See Cartilage. W., Ganglion of. See Ganglia, 

 liable of. W., Lingula of. See Lingula. W., 

 Nerves of: I. The nerves supplying the skin of the 

 arm. 2. Portio inter duram et mollem ; portio inter- 

 media. A small nerve-fasciculus arising from the 

 oblongata and coursing between the facial and auditory 

 nerves. See Nerves, Table of. 



Wrist (rist) [ME., wrist, wrist]. That part of the 

 fore-limb or fore-arm which joins the fore-arm and the 

 hand. See Carpus. W. -clonus. See Reflexes, 

 Table of. W.-drop, a paralysis of the extensor 



muscles of the hand accompanying lead-poisoni 



See Dropped Wrist. W.-ganglion, a hernial poi 



of a tendon-sheath upon the back of the wrist. V 



joint, the carpus, the articulations between the fc 



arm and the hand. 

 Writers' Cramp, W.s* Palsy. See Cramp, Occu 



tion-7ieuroses , Paralysis. 

 Writing Hand (ri' -ting-hand). A peculiar posit 



assumed by the hand in paralysis agitans. See / 



alysis agitans. 

 Wry-neck (ri'-nek). See Torticollis. W., Rotato 



a variety of spasmodic rotatory movements of 



head. 

 Wurali (wu-ra'-le). Same as Curare. 



Xanthate (zan'-thdt) \_^av06c, yellow]. A salt of xan- 

 thic acid. 



Xanthein (zan'-the-in) \f,av%c, yellow]. The yellow 

 coloring-matter of plants {e.g., dahlia, sunflower), 

 soluble in water, but not in alcohol, in which respect 

 it differs from xanthin. 



Xanthelasma (zan- thel-az f - mah) [gavflag, yellow; 

 e'Aao/ia, a lamina]. Spots of yellowish discoloration 

 of the skin of the face, especially about the eyes. 

 X. multiplex. Same as Xanthoma multiplex. X. 

 palpebrarum, xanthelasma of the skin of the eye- 

 lids. X. vitiligoides. Same as Xanthoma vitili- 

 goides. 



Xanthelasmoidea (zan-thel-az-moi-de'-ah). Synonym 

 of Urticaria pigmentosa. 



Xanthene {zan' -then) [!-av06c, yellow]. A yellow 

 mixture obtained from persulphocyanic acid. 



Xanthic ( zan f -thik ) [_!-avd6c, yellow ]. Pertaining to 

 xanthin; yellowish. X. Acid. See Acid. X. Cal- 

 culus, urinary calculus composed mainly of xanthin. 



Xanthidia (zan-thid' -e-ali) \^av%c, yellow]. In bi- 

 ology, small bodies found in the flints of the chalk- 

 beds of England and held by Carter to be the petrified 

 orbicular statoblasts of the Polyzoa. 



Xanthin (zan' -thin) {j-av66c, yellow] , C 5 H 4 N 4 O r 1. A 

 leukomain found in nearly all the tissues and liquids 

 of the animal economy, and also in many plants ; also 

 in minute quantities as a normal constituent of urine. 

 It is formed at the same time with adenin, guanin, 

 and hypoxanthin in the decomposition of nuclein by 

 dilute acids. Guanin is convertible into xanthin, which 

 is thought to be one step lower as an intermediate 

 product of nuclein-decomposition, and nearer the uric- 

 acid limit of oxidation. It probably is oxidized in the 

 body as fast as it is formed. It is a colorless powder, 

 almost insoluble in cold water, but readily soluble in 

 dilute acids and alkalies. It is non-poisonous and a 

 muscle-stimulant, especially of the heart. See Leuko- 

 t/iains, Table of. 2. The name given by Fremy and 

 Cloez to the yellow coloring-matter of plants, which 

 is insoluble in water, but soluble in alcohol, in which 

 respect it is distinguished from Xanthein. See Pig- 

 ments, Conspectus of. 



Xanthinuria (zan-thin-u f -re-ah) \_!-avd6c, yellow ; oupov, 

 urine]. The presence of xanthin in excess in the 

 urine. 



Xanthium (zan'-the-um). See Clolbur. 



Xanthiuria (zan-the-u' -re-ah). See Xanthinuria. 

 Xantho- (zan'-tho-) \_i;avd6c, yellow]. A prefix to 



note yellow or yellowness. 

 Xanthocarpous (zan - tho - kar' '- pus) [ ;a rdoc, yello 



Kafnroc, fruit]. In biology, characterized by yel'i 



fruit. 

 Xanthochroi (zan-tho-kro'-e) [ijavOor, yello v. 



the complexion]. In biology, Huxley's term for 



yellow-haired, pale-complexioned people spread cj 



Asia, forming as it were, an ocean in which the ( 



muck and Tartar tribes from Mongolian islands »j 



engulfed. They form the prevalent races of north! 



Europe, the fair whites, and are largely represerl 



in northern Africa (Berbers). Cf. , Leukon, Mela\ 



chroi. 

 Xanthochroia ( zan - tho - kro'- e-ah) [SavOoc, yello 



Xpoia, skin]. Yellow discoloration of the skin. 

 Xanthochromia (zan-tho-kro' -me-ah) [zavtioc, yelk 



Xpti/ua, a color]. A persistent condition 1 



skin, resembling but not identical with jaundice. 

 Xanthochroous ( zan - tho - kro'- us ) \^avQa 



Xpoa, skin]. Yellow-skinned. 

 Xanthocyanopia, Xanthocyanopsia (zan-/' 



pe-ah, zan-tho-si-an-op' -se-ah) [fni'floc, yelloi 



blue ; oti)ic, sight]. A defect of color-vision in w 1 



yellows and blues are perceived, while reds 



ceptible. 

 Xanthocystin ( zan - tho - sis'- tin ) [:avth 



uro-ic, bladder]. A nitrogenous substanci 



the whitish tubercles in the mucosa and <> 



corpse. 

 Xanthoderma ( zan - tho - der f - mah ) [i'<nf 



dtpfia, skin]. Yellowness of the skin. 

 Xanthodont (zan'-tho-dont) [£av06c, yellow; >'" 



tooth]. In biology, having yellow teeth. 



cisors of rodents. 

 Xanthodontous (zan-tho-don'-tus) [San 



bbo'rr, tooth]. Having a yellow discoloi 



teeth. 

 Xanthogen (zan'-tho-jen). Same as Xatith 

 Xanthoglobulin (zan-tho-glob' -u-lin) [zav 



globulus, a ball]. Same as Hypoxanthin. 



substance found in the liver and the panel 

 Xantho-kreatinin (zan-tho-kreat' -in-in) [JjB 



low; Kpeac, flesh]. The most abundan! 



leukomains, named from the sulphur-yellow 



crystals and its resemblance to kreatinin 



