INDEX 



649 



Ureter, 518. 



Urethra, 519; male, 565. 



Uric acid, 14, 526. 



Urinary organs, 518; salts, 526. 



Urine, '525. 



Uriniferous tubules, 522; secretory 

 action of, 527. 



Urobilin, 14. 



Urticaria, 385. 



Uterus, 567. 



Utriculus, 232. 



Uvula, 443. 



Vaccination, 311. 



Vagina, 568. 



Vagus nerve, 152, 477; relation of to 

 heart, 351. 



Valve, ileocolic, 455. 



Valves of heart, 328; action of, 343. 



Valves of veins, 337. 



Valvulse conniventes, 452. 



Valvular insufficiency, effects of, 344. 



Varicose veins, 370. 



Vasa efferentia, 564. 



Vasa recta, 564. 



Vas deferens, 564. 



Vaso constrictor center, 375; control 

 of, 375; nerves, 374. 



Vasodilator center, 378; nerves, 377. 



Vasomotor tone, 375; relation of to 

 cerebral activity, 378. 



Vegetable foods, 435; cooking of, 436. 



Veins, 322, 332; cephalic, 333; coro- 

 nary, 327; hepatic, 335, 458; in- 

 nominate, 333; jugular, 333; por- 

 tal, 335, 457; pulmonary, 328, 333; 

 saphenqus, 333; structure of, 337; 

 subclavian, 333; valves of, 337; 

 varicose, 370. 



Vena cava, 327, 833. 



Venous blood, 336. 



Venous sinus, 565. 



Ventilation, 412. 



Ventricle of heart, 325; functions of, 

 341, 346. 



Ventricles of brain, 142. 



Vermiform appendix, 455. 



Vertebrae, 56; cervical, 57; lumbar, 

 59; sacral, 59; structure of, 56; 

 thoracic, 58. 



Vertebral artery, 330; column, 3, 55. 



Vertebrate, 3. " 



Vesicle, seminal, 564. 



Vessels, blood, 322; lymphatic, 294. 



Vestibule of ear, 164, 231, 232; func- 

 tion of, 237; nerve endings in, 236. 



Vibrations, analysis of, 224; the basis 

 of sound, 223 ; sympathetic, 225, 227. 



Vibratories, 555. 



Villi of intestines, 453. 



Vision, 123; binocular, 287; color, 276; 

 stereoscopic, 289 ; wide range of, 259. 



Visual angle, 274; apparatus, excita- 

 tion of, 267; area of cerebrum, 177; 

 axis, 275; contrasts, 281; defects, 

 262; perceptions, 285; purple, 250, 

 252, 273; sensations, 271. 



Vital capacity, 398; centers, 193; 

 point, 402; processes, 192. 



Vitamines, 429, 431. 



Vitelline membrane, 571. 



Vitreous humor, 254. 



Vocal cords, 546, 548; false, 548; re- 

 lation of, to pitch, 552. 



Voice, 546; production, 123; range of, 

 552. 



Volition, 166, 169, 184. 



Voluntary acts, reflex at bottom, 184. 



Voluntary muscular contraction, 102. 



Vomer, 60. 



Vowels, 553. 



Vulva, 569. 



Walking, 126. 



Wallerian degeneration, 171. 



Warm-blooded animals, 539. 



"Warming up," 100. 



Warmth receptors, 218. 



Water, equilibrium, 511; proportion 

 of in Body, 10. 



Wave-length of light, 255. 



Waves, peristaltic, 472. 



Wax of ear, 226. 



Weber's law, 205, 214; circulation 

 scheme, 359. 



Weeping, 246. 



Weight, maintenance of, 511. 



Whipped blood, 313. 



Whispering, 556. 



White, sensations, 276; blood-cor- 

 puscles, 301; of eye, 249; fibrous 

 connective tissue, 31, 43; matter, 

 138, 153; matter of cerebrum, 175; 

 of spinal cord, 144. 



Will power, 185. 



Wind pipe, 36, 388. 



Work, of heart, 346; muscular, meas- 

 ure of, 98. 



Worry, significance of, 197. 



Wrisberg, cartilage of, 548. 



Wrist bones, 66. 



Xanthoproteic test, 12. 



Yawning, 408. 



Yellow elastic tissue, 31, 44. 



Yolk, 571. 



Young-Helmholtz theory of color 

 vision, 282. 



Zona pellucida, 571; radiata, 571. 



Zoological position of man, 2. 



Zymogen, 468. 



