516 



INDEX 



Nerves — 



efferent, 403. 



epidermal, 354. 



motor, 403. 



sensory, 403. 



vaso-motor, 205. 

 Nervous system, 382-428. 



central, 385. 



composition, 385. 



diseases of, 424. 



effects of alcohol upon, 424. 



functions of, 411. 



hygiene of, 422. 



in lower animals. Chapter 

 XXVII, 429. 



S3rmpathetic, 385. 

 Nervous tissue, 46. 

 Neura, 47, 405, 406. 



theory of action, 406-409. 

 Neural arch, 226. 

 Neural cavity, 225, 226, 397. 

 Neuralgia, 424. 

 Neurilemma, 403. 

 Neuron {see Neura). 

 Neutralization, 23, 24. 

 Nicotine, 87. 

 Nitrogen, 20. 



Nitrogenous compounds, 26, 52. 

 Nodes of Ranvier, 402. 

 Non-metaUic elements, 23. 

 Non-nitrogenous compounds,26. 

 Non-striated muscle, 44, 45, 266, 



274, 275. 

 Nose, bones, 235. 

 Nose, sense organs of, 448. 

 Nucleus, 32, 34. 

 Nucleolus, 34. 

 Nutrients, 52. 



absorption of, 139. 



forms, 52, 



in blood, 163. 



in bone, 241. j 



in foods, 57. 



sources of, 56. 



uses of, 59. 

 Nutrition, 51-72. 



O. 



Oblique muscles, 110. 

 Occipital bone, 234. 

 Ocelli, 483, 484. 

 Oculo-motor nerve, 388. 

 Odontoid, process, 227. 

 Odors, 450. 

 Olfactory lobes, 392, 393. 



nerves, 388. 



sensations, 448. 

 Omentum, 111. 

 Opium, 88, 89. 

 Optic chiasma, 393. 



lobes, 388, 392. 



nerve, 388. 



thalami, 396. 

 Orbit of eye. 

 Organic chemistry, 16. 



compounds, 26. 

 Organs, 30, 31. 



of Corti, 475. 

 Osmosis, 136, 138, 163. 

 Otocysts, 483. 

 Otoliths, 473. 

 Oxidation, 18, 19, 282 (see 



Respiration) . 

 Oxides, 19, 25. 

 Oxygen, 13, 17, 18, 19, 26 (see 



Respiration) . 

 Oxyhsemoglobin, 166. 



P. 



Pain, sensations, 443. 

 Palate, bones, 235. 



hard, 93, 235. 



soft, 93, 

 Pancreas, 124, 125. 

 Pancreatic juice, 125, 127. 

 Papillffi, dermal, 355, 356. 



hair, 358. 



nail, 360. 



taste, 445. 

 Papillary muscles, 185. 



