INDEX. 



1059 



Urine, composition of, 849 

 nitrogenous excreta of, 851 

 origin of acidity of, 846, 849 

 reaction of, 849 

 secretion of, 840 

 pressure of, 844 



Uterus, changes of,' during menstrua- 

 tion, 984 

 effect of, on mammary glands, 999 



Utriculus, function of, 412 



VAGUS nerve, action of, on gastric 



secretion, 780 



on heart, 585. See also I in- 

 hibition. 



on pancreas, 794 

 as motor nerve to stomach, 730 

 nucleus of, 249 



relations of, to respiratory cen- 

 ter, 695 



Valin, 799, 1025 

 Vasomotor fibers, centers for, in cord, 



619 



in brain, 638 



to pulmonary arteries, 627 

 nerves, action of, in heat regula- 

 tion, 968 



course and distribution, 610, 620 

 general properties of dilators, 621 

 history of discovery of, 606 

 methods used to demonstrate, 607 

 of heart, 626 



position of constrictor center, 613 

 reflex actions of, 615 

 rhythmical action of constrictor 



center, 619 



to abdominal organs, 640 

 to dilator center and reflexes, 622 

 to genital organs, 640 

 to head, 638 

 to kidneys, 847 

 to skeletal muscles, 641 

 to trunk and limbs, 639 

 to veins, 642 

 tonic activity of, 613 

 Veins, vasomotor supply of, 642 

 Velocity of blood-flow. See Circula- 

 tion. 



Velocity pressure in blood-vessels, 514 

 Venous blood-pressures, 509 



cistern, 520 



pulse, 531 



in brain sinuses, 635 

 Ventilation, principles of, 670 

 Ventricle. See Heart. 

 Veratrin, effect of, on muscle, 31 

 Vernix caseosa, 872 

 Vestibular nerve, 214 

 Vestibulospinal tract of spinal cord, 



181, 235 



Villi, intestinal, movements of, 735 

 Vision. See Eye and Retina. 

 Visual acuity, 343 



center in cortex, 207 



field, binocular, 372 

 monocular, 342 



fields, conflict of, in binocular vision, 

 375 



purple, 338 

 Vital capacity, 657 

 Vitamine, 746, 912 

 Volume curve of heart, 550 

 Voluntary muscular contractions, 46 

 Vomiting, 741 



WALLERIAN degeneration, 123, 164 



Warm spots of skin, 281 



Water, absorption of, in stomach, 



792 



excretion of, 862 

 Weber-Fechner law, 285 

 Wharton's duct, 758 

 Wirsung, duct of, 793 

 Work done by contracting muscle, 41 



XANTHIN, 64, 856 



oxidase, 859 

 Xanthoproteic reaction for proteins, 



1028 



ZYMOGEN, 755 



granules, 766 

 Zymoids, 752 



