INDEX 



749 



Thioalbumose, 249. 

 Thio-monamino acid, 70. 

 Thio-monamino-propionic acid, 70. 

 Thoracic cavity, 314. 



importance of suction of, for filling heart, 177. 



suction of, 176. 



Thoracic duct, muscles and nerves of, 349. 

 Thoracic type of respiration, 317, 318, Fig. 126. 

 " Threshold difference," 456. 

 Threshold value of stimulus, 455. 

 Thrombin, 158. 

 Thrombogen, 158. 

 Thymin, 76. 

 Thyroid cartilage, 502. 

 Thyroid extract, 359. 



effects of treatment with, 359, Fig. 137; 360, 



Fig. 138. 

 Thyroid gland, 358. 



blood supply of, 240. 



chemistry of, 362. 



extirpation of, in dogs, 358. 

 in man, 359. 

 in monkey, 360. 



histology of, 361. 



innervation of, 361. 



internal secretion of, 358 seq. 



morphological changes in, 361. 



transplantation of, 359. 

 Timbre of sound, cause of, 491. 

 Time, determination of, in psycho-physical 



processes, 673. 

 Time recorders, 10. 

 Time stimuli, 423. 

 Tissue proteid, 134. 

 Tone deafness, 665. 

 Tone, fundamental, 491. 



musical, 489. 



produced by muscle, 434. 

 Tones, combination of, 501. 

 Tongue, action of, in swallowing, 279. 



taste nerves of, 484, Fig. 191. 



vasomotor nerves of, 235. 

 Tonic activity of cerebellum, 611. 

 Tonic excitation, state of, 581. 

 Tonus, cause of, 581. 



definition of, 581. 



demonstration of, in cross-striated muscles, 

 581. 



inhibition of, by stimulation of cortex, 636, 

 640. 



of blood vessels, 232. 

 Torpedo, 49, Fig. 30. 



Total metabolism, after ingestion of carbo- 

 hydrates, 106. 



after ingestion of fat, 104. 



after ingestion of proteid, 102. 



in fasting, 96. 



in growing children, 118. 



influence of work of digestion on, 107. 



Touch, definition of, 451. 



end organs of, 468. 



sensations of, 461. 

 Touch reflex, 660. 

 Toxins, 40. 



in blood, 156. 

 Trachea, 502. 



Tracts in spinal cord, 563 seq. 

 Transfusion, 207. 

 Transmission of stimulus, rate of, in muscle, 



417. 



in nerves, 417. 

 in spinal cord, 589. 

 Transudation, 207. 

 Treppe, 441. 



Trichromatic color system, 545, 546. 

 Tricuspid valve, 165. 

 Trigeminal or trifacial nerve, 680. 



as nerve of smell, 488. 



as nerve of taste, 484. 



influence of, on respiration, 330. 

 Triglycerides, 79, 701. 

 Trioxypurin, 382. 

 Trochlear nerve, 680. 



nucleus of, 614. 



Trophic centers in spinal ganglia, 568. 

 Trophic effect, definition of, 50. 

 Trophic influence of nerve cells, 569. 

 Trophic influence through motor nerves, 63. 

 Trophic nerves, 569. 

 Trophoblasts, 22. 

 Trypsin, 252. 



spleen and, 368. 

 Tryptophan, 71, 72, 109, 249. 

 Tuber cinereum, 600. 

 Tuning fork as time recorder, 10. 

 Turgor, 33. 



Turtle, extirpation of cerebrum in, 621. 

 Tweenbrain, or diencephalon, 600, 601, 617. 



importance of, in birds, 624. 

 in bony fish, 619. 

 in dogfish, 620. 

 in frog, 620. 

 in lizard, 621. 

 in rabbit, 625. 

 in turtle, 621. 



Tympanic cavity, 495. Fig. 197; 497. 

 Tympanics membrane, 494, Fig. 196; 495, 496. 

 Tyrosin, 71, 72, 249, 255, 378, 384. 



Ultra-red rays, 536. 

 Ultra-violet rays, 536. 



stimulating effect of, 57. 

 Unicellular organisms, 2, 15. 

 Uracil, 76. 

 Uramiai 368. 

 Ursemic poisoning, 367. 

 Urates, 382. 

 Urea, amount of, in urine, 381. 



