INDEX 



315 



Temperature, influence of external, 

 on secretion of urine, 183 ; influ- 

 ence of, on chemical change and 

 vital activities, 189, 190; of the 

 body, 190 ff. ; reactions of body 

 to changes of, 201 ; "danger zone " 

 of, 202 (fig.), 205, 205 (fig.) 



Temperature sensations, 193, 258 



Tendon, 8, 33, 34 



Theine, 290 



Thermal phenomena of the body, 

 189 ff. 



Thirst, 261 



Thoracic cavity. See Pleural cavity 



Thyroid gland, 64 



Tibia, 19 



Tobacco, 305 



Toes, bones of, 19 



Tone, arterial, 161 ; of skeletal 

 muscle, 209 ff . 



Touch, 258 



Trachea, 10, 11, 21 



Trypsin, 120 



'Tweenbrain, 264 (fig.) 



Tympanic membrane, 255, 258 (fig.) 



Tympanum, 256 



Ulna, 19 

 Urea, 181 



Ureter, 181, 182 (fig.) 

 Uric acid, 181 

 Urine, secretion of, 182 

 Use and disuse in the training of 

 the nervous system, 284 



Valves, of heart, 21, 141, 144 ; in 

 veins, 149 



Vasoconstrictor nerves, 162 



Vasodilator nerves, 162 



Vasomotor nerves. See Vasoconstric- 

 tor nerves and Vasodilator nerves 



Vegetable foods, 97, 113 



Veins, 7, 23, 26, 38, 39, 144 (fig.) ; 



intermittent compression of, in 



muscular activity, 146 

 Venae cavse, 13, 22, 23 (fig.), 24 (fig.), 



26 



Venous reservoir, 142 

 Ventral, definition of term, 9 

 Ventricles, of heart, 21, 23, 140 ; of 



brain, 264, 265 

 Vertebra, 14, 16 



Vertebral column. See Spinal column 

 Villus of intestine, 117 (fig.), 118, 



120 (fig.), 126 (fig.) 

 Visual judgments, 253 

 Visual sensations, 252 

 Vitamines, 232 



Vitreous humor, 243, 247 (fig.) 

 Volitional actions, or movements, 



81, 275, 279 



Wandering cells, 137 



Warm weather, circulation in, 152 ; 

 and feeding, 158 



Warm-blooded animals, 191 



Warmth, sensations of, 258 



Waste products, 48, 58, 63 ; excre- 

 tion of, 180 



Water, as a food, 96 ; and the secre- 

 tion of urine, 183 



White matter of spinal cord and 

 brain, 74 



Will, 81, 279 



Wind and temperature regulation, 

 200 



Wines, 294 



Winking, muscular and nervous 

 mechanism of, 69 



Work, unit of, 216 



Wrist, bones of, 19 



Writing, 279 



Yeast, 292 

 Zymogen, 46 



