VAROLI'S BRIDGE 



1591 



VASOGEN 



popularly used to exclude the air from wounds, and in 

 suitable cases they often act happily, 

 /aroli's Bridge. See Pons varolii. 

 /arolii, Pons. See Pons. 

 /arolius, Bridge of. See B 



/arrentrapp and Will. Method of. A method for the 

 determination of nitrogen in organic compounds. The 

 ;.ince to be analyzed is reduced to the finest pow- 

 der, dried, and weighed ; then mixed with soda-lime. 

 It is then placed in a combustion -tube, loosely plugged 

 with asbestos, and heated. The nitrogen is converted 

 into ammonia, which is absorbed by hydrochloric acid 

 contained in a bulb connected with the tube. This is 

 then treated with platinic chlorid, which precipitates am- 

 i monium-platinum chlorid, and the nitrogen is estimated, 

 'arus [L., bent]. See Acne and Talipes. 



V., Arterial, a cirsoid aneurysm. V. comedo. 

 Same as Acne punctata. V., Equino-. See 

 Talipes. V. gutta rosea. Same as Rosacea. V. 

 punctatus. Same as Acne punctata. V. seba- 

 ceus. Same as Seborrhea. 



as [vas) [L., a vessel: //., Vasa~\. A vessel. A 

 generic term for the tubules or canal-like structures 

 for the conduction of liquids, secretions, etc. , through 

 the body or from one organ to another ; used particu- 

 larly to designate vessels carrying blood. V. aber- 

 rans. See Vasculum aberrans. V. deferens, the 

 excretory duct of the testis, the continuation of the 

 epididymis. 



asa [va'-zah) [L.]. Plural of Fas, q. v. V. aber- 

 rantia : I. Vessels that sometimes connect the brachial 

 or axillary artery with one of the arteries of the fore- 

 arm. 2. Isolated bile-ducts on the surface of the liver. 

 h have no relation to any system of hepatic lob- 

 as if the lobules to which they originally be- 

 _cd had atrophied and disappeared. V. afferentia, 

 the branches of a lymphatic or lacteal vessel previous 

 to entering a gland. V. brevia, gastric branches of 

 the splenic artery. V. efferentia, the terminal ducts 

 of the rete testis ; applied also to the efferent vessels 

 of lymphatic glands. V. intestini tenuis, small 

 vessels arising from the superior mesenteric artery 

 and distributed to the jejunum and ileum. See Intestinal 

 Artery in Arteries, Table of. V. recta, the tubules 

 of the rete testis. V. vasorum, the vessels supply- 

 ing the arteries and veins with blood, — i. e., the ves- 

 sels supplying the vessels themselves. V. vorticosa. 

 |See Vena. 



isal (va'-zal) [z-as, a vessel]. Pertaining to a vessel 

 I or to vessels. Vascular. 



isalium i vaz-a' -le-uni) \j.'as, a vessel : //., Vasalia~\. 

 In biology, ti-sues peculiar to vascular or closed cavi- 

 jties; Endothelium, Caelarium. 



iscoa {vas-ko'-ah) [L.]. • A genus of leguminous 

 'ilants. The roots of the S. African V. amplexicau- 

 ;re used as a substitute for liquorice. V. perfol- 

 ata, an African plant, is a strong diuretic. Unof. 

 iscula vas'-ku /ah) [L.]. Plural of Vasculum, q. v. 

 iscular [vas'- ku - lar) [vasculum, a small vessel], 

 -isting of, pertaining to, or provided with ves- 

 sels. V. Fibers, centrifugal nerve-fibers exciting 

 jrontraction of blood-vessels. Vasomotor fibers. V. 

 -amellae. See Plate, Cathatnmal. V. System, 

 he venous and arterial system. 



scularity (vas-ku-lar'-it-e) [vasculum, a little vessel]. 

 The quality of being vascular. 



scularization (vas-ku-lar-iz-a' '-shun) \yasculum , a 

 ittle vessel]. The formation and extension of vascu- 

 I ar capillaries. The process of becoming vascular, 

 sculiform vas' -ku-liforni) [vasculum, a small ves- 

 el ; forma, form]. In biology, having the form of a 

 j'essel; like a flower-pot. 



Vasculin (vas / -ku-lin) [vasculum, a little vessel]. Ex- 

 tract of vascular tissue. 



Vasculomotor [zas-ku-lo-mo'-tor) [vasculum, a little 

 vessel ; motor, a mover]. Acting as a vasomotor 

 upon the capillaries. 



Vasculose (vas'-ku-loz) [vasculum, a vessel]. I. Same 

 as Vascular. 2. The substance forming the vascular 

 tissue of plants. 



Vasculum i vas'-ku-luin) [L. : //., Vascula\ A small 

 vessel. In biology, a botanist's collecting-case. V. 

 aberrans, a tube extending from the lower part of the 

 epididymis into the cord. 



Vaselin (vaz / -el-in) [irregular; Ger., wasser, water; 

 i/.aiov, oil]. Same as Petrolatum. The vaselins 

 are paraffins that liquefy readily and fuse between 30 

 and 40 C. ; they are employed as bases for ointments. 

 V., Liquid, a liquid paraffin used as a vehicle for 

 active medicines. 



Vasifactive {vaz-ifak'-tiz) [vas, vessel ; facere, make]. 

 Giving rise to new blood-vessels. See Angioplastic, 



Vasiform {vaz'-if-orm) [t'rt.j,.vessel ; forma, form]. In 

 biology, resembling a vessel or duct. 



Vaso- {za'-zo-) [vas, a vessel]. A prefix employed to 

 denote connection with the vessels. 



Vaso-con§trictive (z\i' ' -zo-kon-strik' '-tiz') [vas, vessel ; 

 constringere, to constrict]. Promoting or stimulating 

 the constriction of blood-vessels. 



Vaso-constrictor iza'- zo-kon-strik' -tor) [vas, vessel; 

 constrictor, constrictor]. I. Causing a constriction of 

 the blood-vessels. 2. A nerve or a drug that causes 

 constriction of blood-vessels. 



Vaso-corona (va' '-zo-ko-ro' '-na/i) [vas, vessel ; corona, 

 crown]. The system of arterioles that supply the 

 periphery of the spinal cord. 



Vaso-dentinal yva'-zo-dcn'-tin-al) [vas, vessel ; dens, a. 

 tooth]. Pertaining to or of the nature of vaso-dentine. 



Vaso-dentine(:v? / -r()-i/tv/ ' -tin )[vas. vessel; dens, tooth]. 

 Dentine having capillaries large enough for the pas- 

 sage of red blood -corpuscles. 



Vaso-dilator ( va'-zo-di-la'-tor) [vas, vessel ; dilator, 

 a dilator]. I. Pertaining to the positive dilating 

 motility of the non-striped muscles of the vascular 

 svstem. A nervous mechanism, with a center and ef- 

 ferent nerves, probably exists. 2. A nerve-element 

 or a drug that causes dilatation of blood-vessels. 



Vaso-formative (z-a' -zo-for' -mat-iv) [vas, vessel ; form- 

 are, to form]. Forming or producing vessels. See 

 Vasofactive. V. Cells, those engaged in the produc- 

 tion of vascular tissue. 



Vaso-formative Cells. 



r, r. Red blood-corpuscles, k, k. Nuclei of vaso-formative 



cells, a, a. Processes that ultimately unite to form capillaries. 



Vaso-ganglion (va'-zo-gang'-gle-on) [vas, vessel ; yayy- 

 7uov, ganglion]. A knot, or rete, of blood-vessels. 



Vasogen (va'-zo-jen) [vaselin ; yewav, to produce]. 

 Oxygenated vaselin. 



