INDEX 



281 



Mouth, construction of, 164. 

 Movements, regulation of, 33. 

 Moynihan, Sir Berkeley, 191. 

 Mucous epithelium of bowel, 205. 



glands of air-passages, 138. 

 of mouth, 168. 



membrane of bowel, 198. 

 Muscle, combustion in, 151. 



cylinder, 35. 



combustion chambers of, 35. 

 compared to engine, 35. 



cylinders of heart, no. 



evolution of, 264. 



fibres, non-striated, contracted, 177. 



in action, 28, 36. 



microscopic structure of, 34. 



non-striated, of bowel, 172. 

 relaxation of, 178. 



of bronchioles, 137. 



spindles, 41. 



structure of, 29. 

 Muscles, adaptation of, 227. 



antagonistic action of, 128. 



as engines, 13. 



as guardians of joints, 83. 



as internal-combustion engines, 31, 38. 



as motor engines, 8. 



as " pull" engines, 15. 



as reciprocal engines, 41. 



attachment of, 14. 



care of, 38, 39, 45, 64. 



circulation in, 29, 31, n6. 



educated by games and sports, 40. 



efferent messages from, 262. 



elongating action of, 18. 



employed in locomotion, 25. 



fatigue of, 25. 



influence of adrenalin on, 118. 



influence on circulation, 115. 



learning control of, 39. 



merits of, as engines, 44. 



nature of combustion in, 32. 



nerve impulses to, 37, 257. 



nerve mechanism of, 81, 260. 



noise of, 44. 



of abdomen, 129. 



of lower limb, 17, 20. 



of respiration, 127. 



paralysis of, 38. 



temperature of, 34. 



timing of action, 17. 



weight of, 26, 89. 

 Muscular contraction, sound of, 44. 



effort, mechanism of, 225. 



engines always running, 44. 

 peculiarities of, 18. 

 readiness of, 44. 



fibre, structure, 35. 



nodes, 192. 

 Musculi papillares, 100. 

 Myelin, 249. 



Nasal cavities, 134. 

 Natural spirits, 91 



Nature as healer, 268. 



perfect designer, 99. • 



Neck, evolution of, 56. 



muscles of, 57. 

 Negro, heel of, 59. 

 Nerve cell compared to battery, 256. 

 cells, 241. 



discovery of, 250. 



need of oxygen supply, 242. 



of brain, 237. 



of spinal cord, 261. 

 centre of vomiting, 192. 

 centres for bowel, 204. 



for great bowel, 219. 



for lungs, 137. 



for skin, 156. 



for stomach, 186. 



for swallowing, 176. 



for taste, 163. 

 current, 256. 



endings as transmitters, 253. 

 end organs (see Transmitters). 



of muscles, 43. 

 exchanges, construction of, 257. 



for muscles, 43. 

 fibres, 241. 



as living wires, 255. 



structure of, 249. 

 impulses, rate of, 260. 

 mechanism of heart, 114. 



of muscles, 43. 



of oesophagus, 178. 



of secretion, 168. 



of skin, 155. 

 messages from muscles, 41. 



nature of, 260. 



to muscles, 37. 

 " operatives," 238. 

 roots, development of, 250. 

 system compared to telephone, 252. 



evolution of, 264. 

 unit compared, 255. 

 Nerves compared to electric wires, 30 

 degeneration of, 248. 

 discovery of uses, 244. 

 effect of section, 38. 

 function of, 243. 

 influence of, on muscles, 37. 

 of heart, 114. 

 repair of, 249. 

 spinal and cranial, 240. 

 to muscles, 30. 

 Nervous system, nature of, 222. 

 Neuron theory, 251. 

 Nodal centres, 192. 



for bowel, 202. 

 Nose, nerves of, 244. 



Occipital areas and pole of brain, 239. 



condyles, 53. 

 CEsophagus, constriction of, 179. 



length of, 173. 



passage of food along, 173. 



structure of, 177, 

 Old age, vertebral changes in, 22. 



