INDEX. 



433 



Thyroid gland, 406. 



extirpation of, 407. 



extract, effects of, 407. 



structure of, 406. 

 Thyro-arytenoid muscle, 149. 

 Tidal air, 249. 

 Timbre, 146. 

 Tissue proteins, 357. 



respiration, 278. 

 Tone in muscle, 64, 153. 

 Tonometer, 256. 

 Tortoise heart, 211. 

 Touch (see Tactile). 

 Touch corpuscles, 108. 

 Toxins, 168. 

 Trachea, 244. 

 Trapezium, 91. 

 Traube-Hering curves, 231. 

 Tricuspid valve, 177. 

 Trigeminal nerve, nucleus of, 67, 69, 79. 

 Triolein, 7. 

 Tripalmitin, 7. 

 Triple phosphate, 387. 

 Tristearin, 7. 

 Trommer's test, 5. 

 Trypsin, 314. 



action on proteins, 314. 



destruction of, 315. 

 Trypsinogen, 314. 



Tryptophane, 9, 12, 13, 358, 373, 377. 

 Tuberculum acusticum, 70, 91. 

 Tympanic membrane, 141. 



movements of, 145. 

 Tyrosine, 9, 12, 314, 358, 364, 377. 



crystals, 314. 



in urine, 388. 



test for, 314. 



Umbilical cord, 414. 

 Unstriated muscle, 31. 

 Urate deposit, 386. 

 Urea, 384. 



bacterial action on, 384. 



effect of hypobromite on, 384. 



nitrate, 384. 



origin of, 355. 



output on protein diet, 357. 



oxalate, 384. 



preparation from urine, 384. 

 Ureter, contractions of, 398. 

 Uric acid, 11, 385. 



excretion of, 357, 360, 364, 386. 



origin of, 359. 



oxidation of, 360. 



production in birds, 364. 



tests for, 386. 

 Urinary constituents, 382. 



daily amount of, 382. 



deposits, 386. 

 Urine, 382. 



abnormal constituents in, 387. 



acetone in, 388. 



Urine, ammonia in, 385. 



chlorides of, 386. 



composition of, 382. 



freezing-point of, 396. 



lactose in, 387. 



neutral sulphur in, 386. 



organic constituents of, 384. 



phosphates in, 386. 



pigments of, 383. 



pressure of, in ureter, 391, 392. 



reaction of, 383, 395. 



salts of, 386. 



secretion of, 393. 



specific gravity of, 382. 



sugar in, 387. 



sulphates of, 386. 

 Uriniferous tubule, 380. 



functions of, 393. 

 Urobilin, 322, 383. 

 Urochrome, 383. 

 Uroerythrin, 383. 

 Uterus, 412. 



changes in, during pregnancy, 414. 

 Utricle, 151. 



Vagus nerve, 102. 



action on heart, 220. 

 on intestines, 327. 

 on oesophagus, 301. 

 on respiration, 272. 

 on stomach, 310, 311. 



apnoea, 273, 276. 



escape, 220. 



expiratory fibres in, 273. 



inspiratory fibres in, 273. 



nucleus of, 67, 68. 



tonic action on heart, 222. 

 Valves of heart, 176, 177, 191. 

 Variation, diphasic, 26. 



monophasic, 26. 

 Vascular mechanism, 176. 



tone, 224. 



Vaso-constrictor fibres, course of, 226. 

 Vaso-dilator fibres, 228. 



in mixed nerve, 228. 



in splanchnic nerve, 230. 

 Vasomotor centre, 226. 

 effect of acids on, 231. 



centres in cord, 227. 



impulses, path of, 101. 



nerves, 226. 



reflexes, 230. 



Vegetable food, utilisation of, 379. 

 Veins, 179. 



rate of flow in, 187. 



valves in, 179. 



Velocity in vascular system, 187. 

 Venous blood pressure, 182, 185. 



outflow, determination of, 225. 



pulse, 208. 



Ventral spino - cerebellar fasciculus, 

 54. 



28 



