750 



INDEX 



Urea, amount of, in various organs, 382. 



as product of metabolism, 89. 



crystals, 382, Fig. 139. 



elimination of, in fasting, 101, Fig. 43. 



in blood, 155, 389. 



in sweat, 395. 



sources of, 370, 373. 



where formed, 370 seq. 

 Ureters, 391. 



muscular contractions of, 391. 

 Urethra, 392. 

 Uric acid, amount of, in urine, 382. 



composition of, 382. 



crystals, 382, Fig. 140; 383, Fig. 141. 



fate of, in mammals, 373. 



in blood, 155. 



microscopic detection of, in kidney, 388. 



production of, in birds, 371. 



properties of, 382. 



seat of destruction of, 373. 



sources of, 372. 

 Urinary bladder, 391. 



centers for control of, 393. 



innervation of, 392, Fig. 145; 393. 

 Urinary tubules, 385, Fig. 144. 

 Urine, amount of, excreted, 380. 



combustion heat value of, 93. 



composition of, 381. 



excretion of, 384. 



filtration theory, 387. 

 secretion theory, 388. 



general properties of, 379. 



ratio of N:C in, 90. 



retention of, 393. 

 Urine indican, 379. 

 Urine mucoid, 380. 

 Urobilin, 295, 383. 

 Urochrome, 383. 

 Urotoxy, 381. 

 Uterus, 696. 



contractions of, 698, Fig. 302; 699, Fig. 303. 



growth of, in pregnancy, 698. 



innervation of, 700. 



menstrual changes in, 696. 



movements of, induced in various ways, 700. 



pressure curve in, in parturition, 699, Fig. 303. 

 Utilization of foodstuffs, 138. 



of energy, 139. 



of mixed diet, 139. 

 Utriculus of internal ear, 473. 



Vacuoles, contractile, 22. 



in plant cells, 21. 

 Vagina, innervation of, 700. 

 Vagus nerve, 681. 

 components of, 681. 



influence of, on blood pressure, 204 seq. 

 on heart, 188, 190. 

 on intestinal movements, 289. 



Vagus nerve, influence of, on movements of 



stomach, 284, Fig. 114. 

 on respiration, 327. 



explanation of, 329. 

 on secretion of pancreas, 269. 



of stomach, 263. 

 Vagus pneumonia, 569. 

 Valves, atrio- ventricular, 165. 

 closure of, 166, Fig. 54. 



semilunar, 166, 167, 171. 



venous, 225. 



Vampyrella spirogyrrp, 37, Fig. 23. 

 Vasa deferentia, 693, 694. 

 Vascular tonus, 232. 



adrenal bodies and, 366. 

 Vasoconstrictor nerves, 231, 596, 681, 685. 



connection of, with ganglion cells, 582. 

 Vasodilator nerves, 234, 681, 685. 

 Vasomotor centers, 237. 



influence of, on distribution of blood, 239. 



resistance of, to asphyxiation, 573, Fig. 257. 

 Vasomotor nerves, 231, 234, 688. 

 Vasomotor reflexes, 235. 

 Vegetable diet, 145. 

 Vegetable starches, 81. 

 Vegetarianism, 145. 



Vegetative functions, conducting pathways 

 for, 596. 



influence of cortex on, 649. 



spinal cord on, 587. 

 Veins, blood flow in, 223. 



influence of position of body on, 225, 226, 

 Figs. 93, 94; 227. 



blood pressure in, 223. 



cubic distention of, 223, Fig. 92. 



innervation of, 233. 



valves of, 225. 



Veins of Thebesius, 180, 181. 

 Velocity of blood in arteries, 210, Fig. 82. 



in capillaries, 221. 



in veins, 224. 



Velocity of current in tubes, 198, 199. 

 Velocitv of nerve impulse, 417, Fig. 155. 

 Velocity of pulse wave, 215. 

 Vense cavae, 161, 162. 

 Venomotor nerves, 233. 

 Venous blood, percentage of gases in, 339. 



tension of gases in, 341. 

 Venous ostia, 185. 

 Venous sinus, automaticity of, 183. 

 Venous valves, 225. 

 Ventilation of the lungs, 319. 

 Ventricles, 161. 



maximum pressure in, 170. 



negative pressure in, 177. 



structure of, 163. 



work of, 178. 



Ventricular cavities, casts of, in rigor, 164, 

 Fig. 53. 



