716 



INDEX. 



Nerve, spinal accessory, 490. 



hypoglossal, 493. 



sympathetic. 498. 

 Nerve cells, 856. 



in anterior horns of spinal cevrd, 356, 382. 



in posterior columns of spinal cord, 382. 



in the columns of Clarke, 382 



in the cortex of the brain cerebral hemi- 

 spheres, 418, 429. 



in the cerebellum, 435. 



in spinal and sympathetic ganglia, 357,496. 



sheath of, 357. 



processes of, 356. 



connection of, with nerve fibres, 357, 358, 

 384. 



bipolar, 358. 



physiological properties of, 359. 

 Nerve fibres* 343. 



structure of, 344. 



medullated, 344. 



mon-medullated, 346. 



course and mutual relation of, 347. 



division of, 349. 



peripheral termination of, 348. 



in the in tegument, 349. 



in Pacinian bodies, 350. 



in end bulbs of the conjunctiva, 350,. 351. 



in muscles, 359, 351. 352. 



physiological properties of, 351. 



motor and sensitive, 352, 364. 



degeneration and regeneration of, after 

 division, 353. 



connection of, with nerve cells. 357, 358, 384. 

 Nerve force, transmission of, 366. 

 Nerve roots, spinal, connection of, with 

 spinal cord, 384. 



excitability of. 387. 



sensibility of, 888. 



effects of dividing, 387, 388. 



degeneration of, after section, 389, 390. 

 Nerves, structure of, 347. 



division and inosculation of, 347. 

 Nerves, cranial, 446. 



classification of. 447. 

 Nerves, ciliary 497. 

 Nerves, spinal, 374. 



origin of, 384. 



transmission of motor and sensitive im- 

 pulses in, 365. 366. 387. 

 Nerves, of special sense, 447. 

 Nerves, sympathetic, 498. 



vaso-motor, 500. 



dilator, 506. 

 Nervous centre, definition of, 359. 



physiological action of. 359. 

 Nervous irritability. 360. 

 Nervous system, 29, 342, 



general structure and functions of, 342. 



white and gray substance of, 343. 



reflex action of, 359. 



general arrangement of, 373. 



cerebro-spinal. 373. 



sympathetic, 496. 



development of, 667. 

 Network, capillary, 299, 300. 

 Neurilemma, 347. 

 Nictitating membrane. 500. 

 Ninth cranial nerve. 479. 

 Nitrogen, in organic substances, 34, 73. 



daily consumption of, 132. 



in the atmosphere, 240. 



indifference of, in respiration, 244. 

 Nitrogenous organic matters, 34, 73. 



in the food, 122, 130, 132. 



Non-nitrogenous organic sub- 

 stances, 49v 



in the food. 120. 



daily consumption of, 130. 132. 



insufficient for nutrition, 121. 

 Nucleus, oculomotorius and patheticus, 455. 



trigeminal, 459. 



abduccns and facial, 467, 468. 



auditory. 477, 478. 



glosso-pharyngeal. 479. 



pneumogastric, 482. 



spinal accessory, 490. 



hypoglossal, 493. 



Nucleus, olivary, 493. 



of the impregnated egg, 616. 

 Nutrition, functions of, 29, 136. 



Obliteration, of ductus arteriosus, 698. 



of ductus venosus, 697. 



of foramen ovale, 703. 

 Oculomotor ius nerve, 455. 



origin of, 455. 



decussatiqn of, 456. 



physiological properties of, 456. 



influence of, on movements of eyeball and 

 eyelids, 456. 



on iris and pupil, 457. 

 (Esophagus, 137. 



peristaltic movements of, 150, 443, 487. 



nerves of, 483. 



paralysis of. after section of pneumogastric 



nerves, 487. 

 ffistr nation, 603. 

 Oleaginous substances, 61. 



in the food. 62. 



in the chyle 67, 197. 



in the blood, 223. 



digestion of, 171. 



absorption of, 197. 

 Oleine, 64. 

 Olfactory bulb. 448. 

 Olfactory ganglia, 375. 

 Olfactory lobe. 448. 

 Olfactory nerves. 448, 517. 



physiological properties of, 448. 



congenital absence of, 449. 



effect of removing, 449. 

 Olfactory tracts. 448. 

 Olivary bodies, 377. 



connection of, with hypoglossal nerves, 



493. 



Opercttlum. 414. 

 Ophthalmic ganglion, 457. 

 Ophthalmoscope, 525. 

 Optic ganglia. 376. 



Optic nerves, 449. 



decussation of, 377. 449,451, 452, 453, 454. 



central origin of, 450. 



physiological properties of, 450, 528. 



development of. 669. 



Optic nerves and tracts. 377, 451,453, 454. 

 Optic thalami. 376, 417. 

 Optic tracts. 449. 

 Optograms, 536. 

 Ora. serrata, 526. 



Orbital muscle, in qnadrnpeds, 500. 

 Organ of Corf i. 564. 

 Organic matter, production of by plants, 



49, 63, 79. 



Os externnm, of the uterus, 591. 

 Os in termini, of the uterus, 591. 

 Oscillatorire. 581. 

 Ossicles, of the middle ear, 554. 

 Ossification, 40. 



of skeleton, in the chick, 644. 



in the human foetus, 670. 

 Osteomalakia, 40. 

 Otic ganglion, 475, 497. 

 Otoconia. 560. 

 Ovarian pregnancy, 606. 

 Ovaries, 582-585. 



physiological action of, 599. 



quiescence of, during pregnancy, 612, 614. 



development of, 682, 685, 68feL 



descent of, 685. 



condition of, at birth, 686. 

 Oviducts, 586. 



physiological action of, 587, 

 O vitiation. 599. 



in menstruation, 605. 



suspended during pregnancy r 615, 614. 

 Ovnm, 582. 



Oxalic acid, in fermenting urine. 339. 

 Oxidation, of starch, fat, and albumen, oxy- 

 gen required for, 131. 



of starch, 133. 250. 



of fat. 133. 250. 



of albumen, 134. 



of tartaric acid, 250. 

 Oxygen, exhaled in vegetation, 50, 



