YARIOLOGIST 



563 



VEIN 



vals of unaffected skin. V. crystallina. See Vari- 

 cella (Illus. Diet.). V. nigra, the most fatal variety 

 of smallpox ; also called purpura variolosa and malig- 

 nant or hemorrhagic smallpox. Variolae pusillae 

 [Heberden]. See Varicella (Illus. Diet.). V. 

 vaccinatorum. See Varioloid (Illus. Diet.). V. 

 volatica. See Varicella (Illus. Diet.). 



Variologist (za-re-ol'-o-jist). One skilled in the treat- 

 ment of variola. 



Variology {va-re-ol'-o-je) [variola; /ojoc, science]. 

 The science of variola. 



Variolois [Ger. ] : i-re-o-lo'-is). Modified or abortive 

 smallpox ; variola modificata or variola mitigata. 



Variometer \va-re-om f -et-ur). An apparatus for ob- 

 serving slight variations in atmospheric pressure. 



Varix. (See Illus. Diet.) V., Lingual, "varicose 

 veins" at the base of the tongue, formerly held re- 

 sponsible for various throat symptoms. 



Varolian {zar-o'-le-ati) [Constant Varioli, Italian anato- 

 mist, 1542-1575]. Relating to the pons [varolii]. 



Vas. (See Illus. Diet.) V. aberrans of Haller, a 

 small, convoluted duct connected with the tail of the 

 epididymis or the beginning of the vas deferens. V. 

 aberrans of Roth, an inconstant diverticulum of the 

 middle portion of the rete testis. Vasa centralia 

 retinae, the central artery and veins of the retina. 

 Vasa ciliaria, the ciliary arteries and veins. V. def- 

 erens mulieris, the fallopian tube. 



Vasculitis (vas-ku-li'-tis) [yasculum, a small vessel]. 

 See Angiitis (Illus. Diet.). 



Vasectomy (vas-ek'-to-me) [vas, vessel ; euro/*//, a cut- 

 ting out]. Resection of the vas deferens. 



Vaselon [vas'-el-om). An ointment base consisting of a 

 mixture of margaron and stearon dissolved in mineral 

 oil. 



Vasicin (vas'-isin). An alkaloid found in combina- 

 tion with adhatodic acid in Adhaloda vasica, Xees. 

 It is used in bronchial affections and as an insecticide. 



Vasoconstriction (va-zo-hon-strit/shun) [vas, vessel ; 

 constringere, to bind]. The constriction of blood- 

 vessels. 



Vasofactive. See Vasifactive (Illus. Diet.). 



Vasohypotonic (va-zo-hi-po-ton' -ik). See Vasocon- 

 strictor (Illus. Diet. L 



Vasoinhibitor (ya-zo-in-hib' -iter) [vas, vessel ; inhi- 

 bere, to inhibit]. A drug or agent tending to inhibit 

 the action of the vasomotor nerves. 



Vasol (va'-zol). A mixture of liquid petrolatum with 

 ammonium oleate. V., Iodized, vasol containing 7% 

 of iodin. 



Vasoparesis (va-zo-pat^-e-sis) [vas, vessel ; paresis"]. 

 Paresis affecting the vasomotor nerves. 



Vasosection (va-zo-sek'-shun) [vas, vessel ; sectio, a 

 cutting]. Severing of the vas deferens. 



Vasospastic (t>a-zo-spas' '-tik). Angiospastic. 



Vasothion (va-zo-thi'-on). A compound of vasogen 

 and sulfur, 10%; it is used in chronic skin-diseases. 



Vasotonic (va-zo-ton' -ik) [vas, vessel ; rovoc, tone] . 

 Relating to the tone or tension of vessels. 



Vasotribe {va'-zo-trib) [vas, vessel ; rpiSeiv, to grind]. 

 An instrument for controlling hemorrhages, an angio- 

 tribe. 



Vasotrophic (va-zo-tr(/-fik) [vas, vessel ; -pooh, nour- 

 ishment]. , Concerned in the nutrition of vessels. 



Vateria vqh-te'-re-ah} [Abraham Vater, German an- 

 atomist, 1684-1751]. A genus of plants of the order 

 Dipterocarpcie. V. indica, Linn., indigenous to the 

 East Indies, yields white dammar. V. ceylanica, 

 Wight, native of Ceylon, yields selan dammar. 



Veal -skin. Same as Vitiligo. 



Vegetaline (vef-et-al-en). An artificial butter prepared 

 by refining the oil extracted from dried cocoanut. 



Vein. (See Illus. Diet. ) V.s, Accessory Portal, of 

 Sappey, a >ystem of venules uniting to form small 

 trunks, which redivide in the liver and empty into the 

 sublobular veins. It consists of the minute nutrient 

 veins of the portal vein, hepatic artery, and bile-ducts; 

 of venules lying in the gastrohepatic omentum, the 

 suspensory ligament of the liver, and about the fundus 

 of the gallbladder ; and of the group of small veins 

 in the umbilical region. Through the branches lying 

 in the suspensory ligament of the liver and through 

 the paraumbilical group the portal vein communicates 

 with the venae cava*. V., Alveolar, one correspond- 

 ing to the alveolar branch of the internal maxillary 

 artery and opening into the internal maxillary vein. 

 V., Anastomotic, Great. See /'. of Troiard ( Illus. 

 Diet.). V., Anterior Internal Maxillary. Same 

 as V. , Facial, Deep. V., v. Burow's, a slender 

 vein joining the portal vein just before the latter enters 

 the liver. It is formed by the two inferior epigastric 

 veins and receives a branch from the veins of the blad- 

 der. V.s, Cardiac, Anterior, two or three veins on 

 the ventral aspect of the right auricle and the right 

 border of the heart emptying separately into the auri- 

 cle. V., Cardiac, Middle, the largest of the veins 

 on the posterior surface of the heart. It empties into 

 the right extremity of the coronary sinus. V.s, Car- 

 diac, Posterior, three or four veins on the posterior 

 aspect of the ventricles which open into the coronary 

 sinus at its lower border. V., Coronary, Large, 

 of the heart, one arising upon the ventral surface of 

 the apex of the heart, ascending in the anterior inter- 

 ventricular groove, and terminating on the posterior sur- 

 face of the heart in the left end of the coronary sinus. 

 V., Epibranchial, applied in comparative anatomy to 

 a vein above the branchia or gills. V., Facial, Deep, 

 one joining the facial vein below the malar bone; it 

 receives the blood from the pterygoid plexus. V., 

 Falciform, the inferior longitudinal sinus. Veine 

 fluide Theory of Breath-sounds. See under 

 Breath-sounds. V., Hypogastric. See V, Iliac, 

 Internal (Illus. Diet.). V., Jugular, Great. See 

 V., Jugular, Internal (Illus. Diet.). V.s, Kohl- 

 rausch's, the superficial veins that pass from the 

 under surface of the penis upward to empty into the 

 dorsal vein. V., Labbe's. See /*., Posterior Anas- 

 tomosing (Illus. Diet.). V.s, Lingual. Dorsal, two 

 veins arising in a submucous plexus on the posterior 

 portion of the dorsum of the tongue and opening into 

 the common facial vein or internal jugular vein. V.s, 

 Plantar, veins accompanying the plantar arteries. V., 

 Ranine, the chief vein conveying blood from the 

 tongue. It originates near the tip beneath the mu- 

 cosa, accompanies the hypoglossal nerve across the 

 hypoglossus muscle, and empties into the internal 

 jugular vein. V.s, Retzius', the veins which form 

 anastomoses between the mesenteric veins and the in- 

 ferior vena cava. V., Rosenthal's. See V., Basilar 

 (Illus. Diet.). V.s, Santorini's, the emissary veins 

 which form a communication between the cerebral 

 sinuses and the veins of the scalp; especially, the 

 small veins passing through the parietal foramen and 

 connecting the parietal with the superior longitudinal 

 sinus. V.s, Stellate. See Vcrheycn, Stars of ( Illus. 

 Diet.). V.s, Stenson's. See Vtmm vertices a- 1 Illus. 

 Diet.). V., Sylvian, one of the veins of the convex- 

 itv of the brain, which courses at first along the fissure 

 of Sylvius and then ascends across the hemisphere. 

 V.s, Testicular, the pampiniform plexus. V.s of 

 Thebesius. See Vena thebesii (Illus. Diet.). V.s, 

 Vertebrospinal, the veins connecting the plexuses of 

 the spinal canal with the vertebral vein. V.s, Vitel- 

 line, in the embryo, several venous trunks conveying 



