INDEX. 



Su 



Nerve-centres, continued. 



congestion of in asphyxia, 239. 

 diffusion or radiation in, 488. 

 functions of, 485. 

 perception in, 486. 

 reflexion in, 488. 



conditions of, 489. 

 transference of impressions in, 487. 

 Nerve-corpuscles, 475. 

 caudate or stellate, 476. 

 of retina, 642. 

 simple, 476. 

 Nerve-fibres, 467-85. 

 axis-cylinder of, 468. 

 cerebro-spinal, 467. 

 conduction of impressions by, 479. 



of one kind only, 480. 



rate of, 480. 

 continuity of, 471. 

 course of, ib. 

 difference in function not attended 



by difference of structure, 477. 

 effects of injury and division, 481, 



482, 484. 

 fasciculi of, 471. 

 force not generated by, 477- 

 functions of, 476. 



effect of chemical stimuli on, 



479- 

 of mechanical irritation, 478, 



481. 



of temperature, 478. 

 impressions on, referred to peri- 

 phery, 483. 

 kinds of, 467. 

 laws of action, 479. 

 of motor nerves, 484. 

 of sensitive nerves, 480. 

 medullary or white substance of, 



468. 



plexuses of, 472. 

 of retina, 642. 

 size of, 469. 

 structure of, 467. 

 sympathetic, 469. * 



terminations of, 472. 

 in cells, 473. 

 in free ends, ib. 

 in motorial end-plates, ib. 

 in networks or plexuses, ib. 

 in special terminal organs, ib. 

 Nerves, 



action of stimuli on, 477-79. 

 afferent, 477. 



Nerves, continued. 

 centrifugal, 477. 

 centripetal, ib. 

 cerebral, physiology of, 539. See 



Cerebral Nerves, 

 efferent, 477. 

 of motion, or motor, 477. 



laws of action in, 484. 

 respiratory, 237. 

 of sensation, or sensitive, 477. 



laws of action in, 480. 

 of special sense, 539. 

 spinal, 495. See Spinal Nerves, 

 stimuli of, 478. 

 structure of, 467. 

 sympathetic. See Sympathetic 



K erve. 

 ulnar, effect of compression of, 481. 



of division of, 484. 

 vaso-motor, 153, 577. 

 Nervi nervorum, 483. 

 Nervous force, velocity of, 490. 



layer of retina, 642. 

 Nervous substance, changes in from 



mental exertion, 381. 

 fibrous, 467. 



phosphorus in urine from, 463. 

 vesicular, 466, 475. 

 Nervous system, 465. 

 cerebro-spinal, 465, 490. 

 development of, 744, 772. 

 elementary structure of, 466. See 

 Nerve-corpuscles and Nerve- 

 fibres. 



influence of on animal heat, 250. 

 on arteries, 153. 

 on contractility, 588. 

 on contraction of blood-vessels, 



r 53, 578. 



on erection, 195. 



on gastric digestion, 298. 



on the heart's action, 138. 



on movements of intestines, 351. 

 of stomach, 301. 



on nutrition, 390. 



on respiration, 236. 



on secretion, 413. 



on sphincter ani, 35 1. 

 of organic life, 466, 568. 

 sympathetic, 466. 

 Nervus abducens seu ocularis ex- 



ternus, 542. 



patheticus seu troehlearis, 542. 

 vagus, 557. See Pneumogastric. 



