INDEX 



819 



Urine, quantity of, 429, 449 



reaction of, 428, 449 



relation of blood pressure to secre- 

 tion of, 448 



saline matter in, 434 



secretion of, theories of, 436 



solids of, 450 



specific gravity of, 428, 449 



sugar in, 453 



sulphates in, 434, 450 



urea in, 430, 431, 451 



uric acid in, 410, 432 



variations in quantity of constitu- 

 ents, 430 



in specific gravity, 429 

 Uriniferous tubules, 422 

 Urobilin, 433, 452 

 Urochrome, 433 

 Uroerythrin, 434 

 Uterine tubes, 775 

 Uterus, 776 

 Utriculus, 704, 715 



Vagina, 776 

 Vagus nerve, 660 



distribution of, 660 



effects of section, 662 



functions of, 662 



relation to deglutition, 660 

 to gastric secretion, 662 

 to heart's action, 662 

 to respiration, 312, 332 

 Valine, 82 



Valves of heart, 169 

 action of, 181 



of veins, 178 



Van Slyke blood gas apparatus, 303 

 Vasoconstrictor activity, 250 



center, 245 



nerves, 244, 246, 252, 259 



reflexes, 247 

 Vasodilator activity, 250 



center, 250 



nerves, 249, 252 



reflexes, 250 

 Vasomotor centers, 247 



changes, 275 



nerves, 243 



tone, 246 

 Veins, 177 



blood pressure in, 227 



structure of, 178 



Veins, valves of, 178 



vasoconstrictor nerves in, 259 

 Venous blood, analysis of, 302 



flow, 234 



velocity of, 235 

 Ventilation, 317 



Ventricles of heart, action of, 180 

 Vesico-spinal center, 597 

 Vesiculae seminales, 771 

 Vesicular breathing, 294 

 Vicq d' Azyr, bun-die of, 625 

 Villi, 414 



Visceral sensations, 60 1 

 Vision, accommodation of, 728, 731 



binocular, 751 



field of, 744 



limits of, 760, 765 



localization of, 744 



mechanism of accommodation, 731 



range of distinct, 731 

 Visual acuity, 767 



center, 645 



image, projection of, 732 



judgments, 754 



purple, 745 



sensations, 739 

 after-images, 741 

 duration of, 741 

 sense, 715 

 Vital capacity, 313, 328 



phenomena, i 

 Vitamine A, 481 

 Vitamine B, 480 

 Vitamine C, 481 

 Vitamines, 480 

 Vitiated air, effects of, 317 

 Vocal cords, 279, 545 



movements of, 551 

 Vocalization, 551 

 Voice, 544 



difference between male and fe- 

 male, 553 



production of, 544 



quality of, 554 



in singing, and speaking, 552 



vocal range of, 551 

 Vomiting, 376 



center for, 376 



nervous mechanism of, 376 

 Vowels, 555 



Walking, 539, 541 



