774 



INDEX. ' 



Nerve-centre - continued. 

 genito-urinary, 489 

 mastication, 230 

 micturition, 382 

 motor, 516 

 radiation in, 467 

 reflexion in, 467 



laws and conditions of, 467 

 respiratory, 197, 497 

 secretion of saliva, 237 

 sweat, 491 



transference of impressions, 466 

 vasp-motpr, 149, 491 

 vesico-spinal, 489 

 Nerve-corpuscles, 455 

 caudate or stellate, 455 

 polar, 455 

 Nerves, 450 

 accelerator, 133 

 action of stimuli on, 428 



currents of, 427 

 afferent, 458 

 axis cylinder of, 452 

 cells, 455 

 centrifugal, 458 

 centripetal, 458 

 cerebro-spinal, 450 

 classification * 457 

 conduction by, 458 et seq. 



rate of, 458 

 continuity, 454 

 course of, 454 



cranial. See Cerebral Nerves, 

 depressor, 149 

 efferent, 458 



electrical currents of, 427 

 functions of, 456 



effect of chemical stimuli on, 428 

 of mechanical irritation, 428 

 of temperature, 428 

 funiculi of, 453 

 gray, 452 

 impressions on, referred to periphery, 



457 



inhibitory, 458. See Inhibitory Action, 

 mtercentral, 458 

 laws of conduction, 456 et seq. 



of motor nerves, 460 



of sensory nerves, 458 

 medullary sheath, 450 

 medullated, 450 

 motor, 460 



laws of action in, 460 

 natural currents, 427 

 neurilemma, 453 

 nodes of Ranvier, 452 

 non-medullated, 452 

 nuclei, 451 

 of special sense, 460 

 plexuses of, 455 

 primitive nerve sheath, 450 

 sensory, 457 



laws of action in, 458 

 size of, 452 

 spinal, 480. See Spinal Nerves. 



Nerves continued. 

 stimuli, 428 

 structure, 450 



sympathetic. See Sympathetic Nerva 

 terminations of, 460 

 central, 454 

 in cells, 464 



in corpuscles of Golgi, 463 

 in corpuscles of Grandry, 464 

 in corpuscles of Herbst, 462 

 in end-bulbs, 463 

 in motorial end-plates, 398 

 in networks or plexuses, 464 

 in Pacinian corpuscles, 460 

 in touch-corpuscles, 463 

 trophic, 633 



ulnar, effect of compression of, 459 

 varieties of, 450 

 vaso-constrictor, 151, 628 

 vaso-dilator, 628 

 vaso-inhibitory, 628 

 vaso-motor, 628 

 velocity of nerve force, 458 

 white, 451 



Nervi nervorum, 460 

 Nervi vasorum, 109 

 Nervous force, velocity of, 458 

 Nervous system, 450 

 cerebro-spinal, 472 

 development, 696 

 elementary structure of, 450 

 influence of 

 on animal heat, 323 

 on arteries, 147 



on contraction of blood-vessels, 150 

 on erection, 164 

 on gastric digestion, 256 

 on the heart's action, 128 

 on movements of intestines, 294 



of stomach, 256 

 on respiration, 197 

 on secretion, 323 

 on sphincter ani, 488 

 sympathetic, 625 

 Network, intracellular, 16 



nuclear, 17 

 Neural canal, 664 

 Neurenteric canal, 668 

 Neurilemma, 453 

 Neurin, 281 

 Neuroglia, 36 

 Nipple, an erectile organ, 336 



structure of, 336 

 Nitrogen, 732 

 in blood, 89 



influence of, in decomposition, 733 

 in relation to food, 210 et seq. 

 in respiration, 187 

 Nitrogenous compounds, 209 



non-nitrogenous compounds, 209 

 Nitrogenous equilibrium, 435 

 Nitrogenous food, 210 

 in relation to muscular work, 379 et seq^ 

 in relation to urea, 379 

 to uric acid, 381 



