INDEX. 



1593 



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 relations with cyanogen com- 

 pounds, 759 

 ,, diminished excretion of, during 



starvation, 790 



,, excretion of, not increased by exer- 

 cise, 805 

 its kinship to vegetable alkaloids, 



828 

 a constituent of amniotic fluid, 



1528 

 Ureter, structure of, 635, 678 



,, peristaltic contractions of, 680 

 Uric acid, chemical composition of, 649 

 ,, relations to urea, circumstances 

 determining its appearance, 

 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, 054, 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, 685 

 ,, ,, during starvation, 790 



,, sugar present in diabetes, 730 

 ,, of children, characteristics of, 1545 

 Urobiliu, 652 

 Use, muscle substance increased by, 



148 

 ,, skilled movements facilitated by, 



1069 



" Uterine milk," 1519, 1526 

 Uterus, the, general structure of, 1489 

 minute structure of, 1490 

 blood vessels and lymphatics of, 



1491 



,, reception of the ovum by, 1498 

 ,, changes in mucous membrane 

 of, during menstrua- 

 tion, 1499 



,, ,, after impregnation, 1512 



,, expansion of, during pregnancy, 



1533 



"retraction" of, 1534, 1536, 

 1538 



Uterus, rhythmical contractions of, dur- 

 ing pregnancy, 1533 

 ,, during 'labour,' 



1534 



,, nerves of, 1538 

 Utricle, primordial, 4 



,, of labyrinth, 1337 



Vagina, the, structure of, 1491 

 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 

 ,, ,, sernilunar, of the pulmonary 



artery, 230 



,, their action, 



231 



of aorta, 235, 246 



,, ileo-cffical, mechanism of, 463 

 of the thoracic duct, 482 

 ,, of the lymphatic vessels, 483, 501 

 ,, absence of in pulmonary veins, 534 

 ,, of Vieussens, 936 

 Valvular conniventes of small intestine, 



442 



Vapour, aqueous, in expired air, 550 

 Vas deferens, 1503 



,, ,, contraction of in emission, 1510 

 Vasa vasorum of arteries, 195 

 ,, ,, of veins, 196 



,, afferentia and efferentia of kidney, 



639 



,, efferentia of testis, 1503 

 ,, recta of testis, 1503 

 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 inflamma- 



tion, 338 



Vaso-motor action, 306-330 

 ,, effects of, 319 



,, ,, cutaneousandsplanchnic, 



compensatory, 350, 351 



,, compensatory in loss and 



increase of blood, 341 

 ,, ,, in brain, 1136 



,, ,, summary of, 330 



,, ,, regulation of temperature 



by, 811 

 ,, ,, its rhythmic tendency, 622 



centre, 1098, 322, 329 

 ,, ,, limits of, 326 



