1032 



INDEX. 



Hemorrhage, effect of, 469 

 Heredity, definition and history, 994 

 Hering theory of color vision, 362 

 Hexon bases, 980 

 Hippuric acid, 854 

 Histidin, 795, 1009 

 Histohematins, 437 

 Histons, 991, 1014 

 Hof acker-Sadler law, 1000 

 Homoiothermous animals, 945 

 Homolateral conduction in cord, 176 

 Hordein, nutritive value of, 903 

 Hormones, 776 



stimulation of kidneys by, 843 

 Horopter, 375 

 Hunger, sense of, 290 

 Hunger-contractions, 725 

 Hydrocele liquid, 450 

 Hydrochloric acid, combined, in gas- 

 tric secretion, 772 

 function of, in peptic digestion, 



780 



in gastric juice, 772 

 Hydrogel, 452 

 Hydrogen exponent, 418 



ion concentration, 418 

 Hydrolysis, 748 



heat energy of, 935 



Hydrostatic factor in circulation, 515 

 Hyperglycemia, 909 

 Hypermetropia, 321 

 Hyperpnea, 699 

 Hypertension, 879 

 Hyperthymusism, 872 

 Hyperthyroidism, 871 

 Hypertonic solutions, 1020 

 Hypnotic sleep, 269 

 Hypnotoxin, 266 



Hypoglossal nerve, nucleus of, 250 

 Hypotension, 879 

 Hypotonic solutions, 1020 

 Hypoxanthin, 65, 850 



IDENTICAL points of retina, 372 

 Identity theory of nerve impulse, 



123 



Immune body, 425 

 Incongruence of retinas, 373 

 Indican, 855 

 Indirect calorimetry, 950 



field of vision, eye, 342 

 Indoxyl sulphuric acid, 808, 855 

 Induction coil, 24 

 Inert layer in circulation, 482 

 Inheritance, Mendelian, 997 

 Inhibition, escape from, in heart, 585 



of heart, 581 



of knee-jerk, 156 



of reflexes, 147 



of respiratory movements, 691 



reflex of heart, 586 



Inhibition, theories of, 589 

 Inhibitory theories of sleep, 265 

 Inotropic nerves to heart, 585 

 Inspiration. See also Respiration. 

 definition of, 645 

 increased heart-rate during, 664 

 means of producing, 646 

 muscles of, 648 



Inspired air, composition of, 665 

 Intermediary metabolism of carbohy- 

 drates, 907 

 of fats, 915 

 of nuclepproteins, 851 

 of proteins, 895 



products of muscle metabolism, 67 

 Intermittent claudication, 32 

 Internal secretion, adrenals, 874 



definition and historical account, 



866 



liver, 867 

 ovary, 886 

 pancreas, 887 

 testis, 884 

 thyroid tissues, 867 

 sensations, 273 

 Interrenal system, 874 

 Interstitial tissue, 885, 987 

 Intestinal movements, effect of vari- 

 ous conditions upon, 730 

 secretion, 798 

 villi, movements of, 729 

 Intestines, bacterial action in, 807 

 large, movements of, 731 

 nervous control of movements of, 



730 



reaction of contents of, 808 

 small, movements of, 725 

 Intracellular enzymes, 961 

 Intracranial pressure, 628 

 Intra-ocular pressure, 330 

 Intrapulmonic pressure, 657 

 Intrathoracic pressure, 658 

 origin of, 660 



variations of, with forced breath- 

 ing, 659 



Intraventricular pressure, 547 

 Introductory contractions of muscle, 



34 



Invertase, 750, 800 

 Involuntary muscle, 55 

 lodothyrin, 869, 871 ' 

 IriSj action of drugs upon, 328 



antagonistic action of muscles upon, 



325 



muscles and nerves of, 324 

 Iron, effect of removal of spleen on, 



831 



in hemoglobin, 429 

 sal'ts, source and nutritive impor- 

 tance of, 922 



Irritability, definition of, 23 

 of muscle, 23 



