INDEX 



283 



Sex Glands, influence on growth, 229. 

 Sewage system of body, 187. 

 Sexual impulses, 162. 



prematurity, 229. 

 Sherlock Holmes in Medicine, 106. 

 Shivering, effects of, 154. 

 Shoulder-blades, fixation of, 25. 

 Shoulders, suspension of, 125. 

 " Signaller " cells, 257. 

 Signalling in alimentary system, 191, 209. 

 Sinews, 16. 



Singing, control of muscles in, 128. 

 Sitting, muscles involved in, 21. 

 Skeleton, bones of, 71. 



compared to framework of bicycle, 14. 



in motion, 14. 



weight of, 89. 

 Skin, area of, 156. 



as heat regulator, 155. 



shedding of epidermis, 85. 



structure of, 155. 

 Skull as lever, 50. 

 Sleep needed for repair, 263. 

 Smell mechanism, 135. 



sense of, 163. 

 Smith, Prof. G. Elliot, 239. 

 Soleus (see Gastrocnemius). 

 Sparking plug, 9, 11. 

 " Sparking plugs " of muscles, 37. 

 Speaking, control of muscles in, 128. 

 Specialisation exemplified, 133. 

 Speech, 136. 



action of tongue in, 165. 



beginnings of, 39. 

 Speed gained at expense of power, 49, 65. 

 Speed-gear problems, 60. 

 Sphincter at cardiac orifice, 173, 179. 



ileo-caecal, 195. 



mechanism of bile duct, 202. 



mechanisms, 161, 179. 



of pharynx, 174. 



of pylorus, 190. 

 Spinal column (see Back-bone). 



cord, 237, 240. 



reflex centres of, 259. 



muscles act in respiration, 127. 



nerves, roots of, 240. 



roots, functions of, 246. 

 Spinous processes, 23. 

 "Spirits," 91. 

 Sprains, 87. 



Springs of the body, 23. 

 " Stand at ease," significance of, 25. 

 Standard of efficiency for muscles, 45, 160. 

 Standing, exhaustion from, 25, 63. 

 Starches, digestion of, 197. 

 Starling, Prof. E. H., 115, 222. 

 Stature, completion of, 73. 

 Stomach, air in, 216. 



as a hopper, 194. 



blood supply of, 117. 



cardiac sphincter of, 179. 



construction of, 185. 



emptying of, 183. 



filling of, 163, 181. 



Stomach, movements of, 182. 



supposed function, 91. 



vessels and nerves of, 186. 

 Stonehenge, leverage at building of, 48. 

 Stopcock action in arteries, 113, 204. 



mechanism, 115. 



of lungs, 137. 



system (see also Sphincters). 

 Stopcocks of heart, in. 

 Strikes impossible in the body, 266. 

 Stroke of muscle and of engine compared, 



3°- 



regulation of length of, 32. 

 Strokes of internal-combustion engine, 12. 

 Structure, a guide to function, 99. 

 Struts and ties, 75. 

 Suffocation, ancient explanation, 93. 



methods of, 120. 

 Sugar, absorption of, 197. 



as fuel for food, 159. 



as fuel for muscles, 37. 



produced in liver, 118, 226. 

 Suprarenals (see Adrenals). 

 Surgeon's role in healing, 268. 

 Swallowing, 168, 173. 

 Sweat glands, 156. 

 Sweet-bread (see Pancreas). 

 Swimming, joints involved in, 82. 

 Synovia, 84. 



absorption of, 86. 

 Synovial sheaths, 87. 

 Systole of arteries, 94. 



Taste-buds, 163. 



Taste, mechanism of, 163. 



Teeth, 166. 



decay of, 167. 



nerves of, 169. 



replacement of, 166. 



toilet of, 168, 

 Telepathy, 266, 

 Telephone exchanges, 252. 

 in nerve system, 257. 



system of body, 253, 



unit explained, 255. 

 Telescope, joints of, 53, 56. 

 Temperature (see also under Heat). 



regulation, 34. 



skin regulation of, 155. 

 Tendons as piston-rods, 15. 



repair of, 268. 



sheaths of, 87. 

 Test-meal of bismuth, 170. 

 Test-tube glands, 198. 

 Theory, nature of, 107. 

 Thigh-bone, architecture of, 75. 

 growth of, 70. 

 repair of, 272. 

 Thirst, 157, 162. 

 Thorax as bellows, 120, 130. 



joints of, 83. 



structure of, 125. 

 Throat, 135. 



construction of, 174. 



functions of, 173. 



