INDEX. 



455 



Urea, its presence in the blood antece- 

 dent to kidney action, 672 

 ,, its action on the tubules of kidney, 



676 

 ,, brought to the kidneys by the 



blood, 750, 760 



,, its formation in the liver, 755 

 ,, synthesis of, 756 

 ,, its relation with cyanogen com- 

 pounds, 759 

 ,, diminished excretion of, duiiug 



starvation, 790 



, t excretion of, not increased by ex- 

 ercise, 805 

 ,, its kinship to vegetable alkaloids, 



828 

 ,, a constituent of amniotic fluid, iv. 



390 

 Ureter, structure of, 635, 678 



,, peristaltic contractions of, 680 

 Uric acid, chemical composition of, 649 

 ,, relations to urea, circum- 

 stances determining its ap- 

 pearance, 757 

 ,, constant presence of in the 



spleen, 743 

 Urina hysterica, 677 

 Urine, composition and characters of, 648 

 normal organic constituents, 649, 



653 



inorganic salts of, 650 

 average composition of, 653 

 abnormal constituents of, 654, 734 

 secretion of, 656 

 vaso-motor mechanisms for, 657 

 its relations to the renal circula- 

 tion, 664 

 albuminous, 670 

 pigments of, 673 

 discharge of, 678 

 its secretion continuous, 679 

 changes of, in the bladder, 635 

 ,, during starvation, 790 

 sugar present in diabetes, 730 

 of children, characteristics of, iv. 



407 



Urobilin, 652 



Use, muscle substance increased by, 148 

 ,, skilled movements facilitated by, 



1069 



" Uterine milk," iv. 381, 388 

 Uterus, the, general structure of, iv. 351 

 ,, minute structure of, iv. 352 

 ,, blood-vessels and lymphatics of, 



iv. 353 



,, reception of the ovum by, iv. 360 

 ,, changes in mucous membrane 

 of, during menstrua- 

 tion, iv. 361 



,, ,, after impregnation, iv. 374 



,, expansion of, during pregnancy, 



iv. 395 , 



" "retraction" of, iv. 396, 398, 

 400 



Uterus, rhythmical contractions of, during 



pregnancy, iv. 395 



,, ,, during ' labour,' iv. 



396 



,, nerves of, iv. 399 

 Utricle, primordial,^ 



,, of labyrinth, iv. 199 



Vagina, the, structure of, iv. 353 

 Vagus, see Nerve, vagus. 

 Valves of veins, 197, 219 

 ,, of the heart, 197 

 ,, ,, ,, their action in circulation, 



230 

 ,, ,, ,, sounds caused by their 



closure, 235, 236 



,, ,, ,, tricuspid, their action, 230 

 ,, ,, ,, semilunar, of the pulmon- 

 ary artery, 230 



,, ,, ,, ,, their action, 



231 



,, ,, of aorta, 235, 246 

 ileo-csecal, mechanism of, 463 

 cf the thoracic duct, 482 

 of the lymphatic vessels, 483, 501 

 absence of, in pulmonary veins, 534 

 of Vieussens, 936 

 Valvulse conniventes of small intestine, 



442 



Vapour, aqueous, in expired air, 550 

 Vas deferens, iv. 365 

 ,, ,, contraction of in emission, iv.372 

 Vasa vasorum of arteries, 195 

 ,, ,, of veins, 196 



,, afferentia and efferentia of kidney, 



639 



,, efferentia of testis, iv. 365 

 ,, recta of testis, iv. 365 

 Vascular mechanism, 186 340 



structure of capillaries, 190 

 ,, ,, of minute arteries, 193 

 ,, ,, of larger arteries, 194 

 ,, ,, of veins, 196 

 ,, ,, of heart, some points 



in, 197 



,, main features of, 198 

 ,, main regulators of, 273, 306 

 walls, their action on the blood, 



27 



,, ,, alteration of in inflam- 



mation, 338 



Vaso-motor action, 306330 

 ,, effects of, 319 



,, cutaneous and splanchnic, 



compensatory, 350, 351 

 ,, compensatory in loss and 



increase of blood, 341 

 ,, in brain, 1136 



,, summary of, 330 



,, regulation of temperature 



by, 811 



,, ,, its rhythmic tendi-ncy,622 



,, centre, 1098, 322, 329 

 limits of, 326 



