INDEX 



517 



Nerve fibres — continued 

 motor, 371, 372, 403. 

 non-medullated, 368. 

 reflex, 372, 403. 

 secretory, 372, 403. 

 sensorj', 371, 372, 403. 

 ganglia, 376, 381, 404. 

 glossopharyngeal, 397. 

 hypoglossal, 397. 

 impulse, 403. 



direction of, 371. 

 identity of, 372. 

 nature of, 370. 

 speed of, 373, 403. 

 stimulus necessary for, 399. 

 inferior maxillary, 396. 

 mixed, 380. 

 motor oculi, 396. 

 of eye, 423. 

 of nose, 414. 

 of tongue, 412. 

 olfactory, 396. 

 ophthalmic, 396. 

 optic, 396. 

 pathetic, 396. 

 peripheral, 383. 

 plexus, 370, 377. 

 pneumogastric, 397. 

 processes, 366. 

 regeneration of, 382. 

 spinal, 364, 380, 406. 

 spinal accessory, 397. 

 stimulation, artificial, 370. 



physiological, 371. 

 superior maxillary-, 396. 

 tissue, properties of, 364, 402. 



varieties of, 404. 

 trifacial, 396. 

 trochlear, 396. 

 trunks, 404. 



formation of, 373. 

 vasoconstrictor, 169, 181, 378. 

 vasodilator, 169, 181, 378. 

 vasomotor, 169, 181, 378. 

 vestibular, 420, 436. 

 Nervous system, 26, 32, 363. 

 autonomic, 376. 

 central, 363. 



interdependence of, 377. 

 divisions of, 363, 401. 

 functions of, 363, 401. 

 gray matter of, 373. 

 parts of, 363, 401. 

 regulation of bodily heat by, 354. 

 sympathetic, 364. 

 white matter of, 373. 

 Neuraxon, 366. 

 Neurilemma, 367. 

 Neuroglia, 364, 373, 404. 

 Neurology, definition of, 14. 

 Neurones, 364, 365, 402. 



intercentral, 375. 

 Neutralization, 8. 



I Nipple, 454. 



I Nitrogen equilibrium, 311, 320. 

 Nodes of Ranvier, 402. 

 Non-medullated nerve-fibre, 368 

 Nose, 232, 250. 

 external, 232, 250. 

 functions of, 250. 

 internal, 250. 

 nerves of, 414. 



sinuses communicating with, 234, 250. 

 Nucleus of cell, 22. 



Obesity, causes of, 309, 320. 

 Oblique muscles, of eyeball, 97. 

 Occipital bone, 53. 



lobe of cerebrum, 391. 

 Occipito-frontalis, 96. 

 Odontoid process, 66. 

 Odors, 413, 4.34. 

 (Edema, 224, 231. 

 CEsophageal arteries, 193. 

 (Esophagus, 261, 281. 

 Olecranon process, 72. 

 Olfactory bulb, 414. 



nerve, 414. 

 Omentum, 255, 264. 

 Ophthalmic nerve, 396. 

 Opsonins, 145, 158. 

 Optic chiasm, 429. 

 foramen, 439. 

 nerve, 396, 423. 

 Orbicularis oris, 100. 

 Orbit, 423, 439. 



bones of, 423, 439'. 

 Orbital cavity, 19, 20. 



muscles, 97, 423, 438. 

 Organ, 25, 32. 



of Corti, 419, 436. 

 Organic compounds, 5. 

 Organules, 363, 369. 

 Os coxae, 74. 

 Osmosis, 10, 154. 

 Osmotic pressure, 11. 

 Osseous tissue, 42 ; and see Bone. 

 Ossicles of ear, 416, 435. 

 Osteology, definition of, 14. 

 Otoliths, 418. 

 Ovarian arteries, 197. 

 Ovaries, 442, 463. 

 Overeating, efifects of, 321. 

 Oviducts, 444, 464. 

 0\-ulation, 452, 465. 



and menstruation, 453, 465. 

 0\-um, 443, 460, 408. 

 lecundated, development of, 468. 

 segmentation of, 461. 

 Oxidation, 8. 

 Oxide, 7. 

 acid, 7. 

 basic, 7. 

 Oxyhaemoglobin, 143. 



Pacini, corpuscles of, 370, 459. 

 Pain, 409, 433. 



