748 



INDEX 



Heart, nerves of, 200 



production of heat by, 463 

 regulation of force and frequency 



of contraction, 200 

 relation of rhythm to nutrition, 



199 



rhythmic contraction of , 191, 199 

 size of, 165 

 sounds of, 178 



causes of, 179 

 structure of, 165 

 tonicity of, 192 

 valves of, 167 



action of, 176 

 volume of, 252 

 weight of, 165 

 work per diem, 454 

 Heat, animal, 461 



dissipation of, 464 

 from lungs, 466 

 from skin, 464 

 influence of extreme, 465 



of nervous system on pro- 

 duction of, 467 



produced in muscular contrac- 

 tion, 483 



-producing tissues, 461, 463 

 production of body-, 452,461,466 

 regulation of body-, 463, 467 



centers for, 468 

 -rigor, 473, 492 

 variations in loss of, 463 



in production of, 466 

 Heidenhain's experiments on urine 



secretion, 413 

 Heller's ring test, 108 

 Hemacytometer, 155 

 Hematin, 141, 142 

 Hematoblasts, 127 

 Hematoidin, 142 

 Hematoporphyrin, 141 

 Hemianopsia, 605 

 Hemin, 142 

 Hemiopia, 605 

 Hemochromogen, 141 

 Hemoglobin, 95, 136, 160, 294 

 action on gases, 138 

 combining power with oxygen, 



292 



derivatives of, 141, 160 

 estimation of , 139, 155 

 reduced, 138 



Hemoglobinometer, 139, 156 

 Hemolysis, 145 

 Hemometer, 156 

 Henle's membrane, 169 



loop, 400 



Hepatolytic sera, 146 

 Hind-brain, 566 

 Hippuric acid, 410 



formation of, 410, 440 

 Histones, 91 

 Hyaline cartilage, 39 



cells, 131 



leucocytes, 131 

 Hyaloplasm, 8, 18 

 Hydrochloric acid, 350, 351 

 combined, 350 

 digestive action of, 351 

 test for free, 350 

 Hydrogen, amount excreted, 433 



effect of breathing, 304 



in proteins, 106 

 Hyperisotonic solutions, 150 

 Hypermetropia, 686 

 Hyperpnea, 303, 314 

 Hypertonic solutions, 150 

 Hypoblast, 14 

 Hypoglossal nerve, 622 

 Hypoisotonic solutions, 150 

 Hypotonic solutions, 150 



INCOME of energy, 453 



Indol, 386 



Induced currents, 475 



Induction coil, 475 



Infundibulum, 272 



Inhibition, function of nerve centers 



in. 559 

 Inogen, 495 

 Inorganic foods, 325 



substances, 103 

 Insalivation, 329 

 Inspiration, 276 



forced, 276 



muscles of, 276 

 force of, 282 



quiet, 276 



relative time of, 281 

 Inspired air, 286, 311 

 Intercellular substance, 22, 33 

 Interepithelial arborizations, 74 

 Internal capsule, 585 



secretions, 316, 454, 459 



