INDEX 



403 



Nerves, of heart, 176, 177. 



of skin, 87. 



of small intestines, 224. 



of stomach, 223. 



plexuses, 30, 66, 87, 223, 224, 261, 

 283, 295. 



respiratory, 198. 



sensory, 28, 30, 86, 298. 



spinal, 29, 72, 86, 87, 281-283. 



structure of, 277, 278. 

 Nervous discharge, 299. 

 Nervous disorders, 314, 316, 320, 321, 



325-327. 



Nervous elements, 275. 

 Nervous impulse, passage of, 22, 279. 

 Nervous operations, conscious, 35-145. 



unconscious, 145-272. 

 Nervous prostration, 316. 

 Nervous system, anatomical descrip- 

 tion, 275-296. 



cerebro-spinal or central, 27-30, 275, 

 278, 305-313. 



controls muscular action, 70. 



functions of, 22, 27, 35, 77, 297-313. 



habit as connected with, 302, 321- 

 324. 



hygiene of, 314-334. 



influence of alcohol on, 325-332. 



nutrition of, 314-317. 



sympathetic or ganglionic, 27, 30, 

 275, 292-295, 304, 305. 



vasomotor, 179, 180. 

 Nervous tissues, 20, 21, 30, 32, 275. 

 Nervousness, 314. 

 Neural arch, of vertebra, 42. 

 Neural ring, of vertebra, 42. 

 Neuraxon, 276, 278. 

 Neurilemma, 32, 33, 61, 277, 278. 

 Neuroglia, 278. 

 Nicotine, effects of, 332. 

 Nitrogen, in air, 187. 



in food, 201, 204-208, 261. 

 Nodes, 33. 

 Noise, 141. 



Nonmedullated nerve fibers, 33, 277. 

 Nonnitrogenous food, 205, 208. 

 Normal salt solution, 17. 

 Nose, bleeding of, 346, 347. 



foreign bodies in, 352. 

 Nucleus of cell, 11. 

 Nutrition, 236-253. 



Nutrition, defined, 201, 202. 

 function of, 11, 12. 

 how effected, 145. 

 of nervous system, 314-317. 

 organs for, 59. 



Oblique muscles, 110, 111. 



Occipital bone, 40. 



Occipital lobe, 285. 



Occipito-parietal fissure, 286. 



Oculomotor nerve, 104, 290. 



Odontoid process, 44. 



Odors, 97. 



Oil glands, 85. 



Olfactory bulbs, 96, 286, 287. 



Olfactory lobes, 96. 



Olfactory nerves, 40, 9(5-98, 290. 



Olfactory tract, 286. 



Omeutum, great, 221. 



Opium, effects of, 332. 



Optic chiasma, 104. 



Optic commissure, 104. 



Optic lobes, 28, 284, 287, 307, 308. 



Optic nerve, 103-106, 108, 290. 



Optic thalami, 28, 284, 287, 308. 



Optic tract, 105. 



Orbit of eye, 105. 



Organic matter, decomposition of, 243. 



Organism, defined, 20. 



Organs, defined, 20. 



of Corti, 130, 131. 



tissues forming, 20. 

 Os innominatum, 46. 

 Osmosis, 160, 175. 

 Ossicles, auditory, 127. 

 Ossification, process of, 26. 

 Otoliths, 132. 

 Oval window, of ear, 127. 

 Overwork, 320, 321. 

 Oxidation, 205-209, 227, 257, 267. 

 Oxygen, 147, 149, 201-209, 227, 257, 267 ; 



see respiration. 

 Oxy hemoglobin, 188. 



Pacinian corpuscles, 87. 

 Pain, sensation of, 86, 89, 90. 

 Palate, hard, 40, 218. 



soft, 218. 

 Palate bones, 40. 

 Palmar arch, 162, 164. 

 Pancreas, 231. 



