848 



INDEX. 



Neuron, 91 



Neutrophil, 146 



Nerve-cells, 99 



Nerve-centres, automatism of, 558 



functions of, 555 



inhibition and augmentation of, 558 

 Nerve collaterals, 98 



-corpuscles, 93 



effect of constant current on, 528 



electrotonus in, 529 



-fibres, 91 



functions of, 552 

 medullated, 91 



impulse, velocity of, 554 



plexuses, 99 



stimuli, 528 



terminations, 102 



trunks, 97 



Nerves, effect of battery currents on 

 human, 531 



electrical currents in, 527 



vaso-motor, 246 

 Nervous metabolism, 534 



system, 552 



cerebro-spinal, 554 

 development of, 806 

 Neuro-keratin, 122 

 Ninth nerve, 607 

 Nitrogenous bases, 828 

 Nitrogenous equilibrium, 429 

 Nodes of Ranvier, 95 

 Nceud vital, 282 

 Normal saline solution, 35, 134 

 Nose, development of, 813 

 Notochord, 774 

 Nuclear matrix, 13 

 Nucleic acid, 119 

 Nuclein bases, 119, 828 

 Nucleins, 119 

 Nucleoli, 12 

 Nucleo-proteids, 119 

 Nucleus, 11 



ambiguus, 607 



of Pander, 771 



structure of, 12 



ODOXTOBLASTS, 72 

 (Esophagus, 351 

 Oils, 122 



Olfactory bulb, 671 

 centre, 641 



Olfactory tract, 641 

 Olivary bodies, 587 

 Omphalo-mesenteric duct, 778 

 Oncograph, 483 

 Oncometer, 483 

 Ophthalmoscope, 725 

 Optic centre, 639 



lobes, 649 



thalami, 583, 616 



functions of, 642 

 Optical apparatus, 709 



anatomy of, 693 



defects of, 718 

 Organ of Corti, 683 

 Organic chemical substances, 826 



substances, 111 

 Organized ferments, 401 

 Organs, development of, 788 

 Osmosis, 408 

 Osseous labyrinth, 679 

 Osteoclasts, 65 

 Osteogenetic fibres, 61 

 Output of energy, 444 

 Ovaries, 744 

 Oviducts, 748 

 Ovum, 746 



changes in, 766 



following impregnation, 767 

 prior to impregnation, 766 

 Oxygen in expired air, 273 

 Oxyha?moglobin, 158 

 Oxyntic cells, 356 

 Oxyphil, 146 



PACINIAN corpuscles, 104 

 Pain. 664 

 Pancreas, 379 



development of, 815 

 internal secretion of, 318 

 structure of, 379 

 Pancreatic diabetes, 318 

 juice, 381. 



conditions favoring action of, 



384 



functions, 382 

 nervous mechanism of secretion, 



384 



Paraglo.bulin, 117, 135 

 Parathyroids, 313 

 Parotid gland, secretion of, 342 

 Parturition centre, 580 



