402 



INDEX 



Mesentery, 224. 

 Metabolism, 202. 

 Metacarpus, 46. 

 Metatarsals, 46. 

 Microbes, see bacteria. 

 Milk, as food, 203, 204, 216. 

 Milk teeth, 218. 

 Mitral valves, 157. 

 Molars, 219. 

 Molecule, 9, 10. 

 Motion, in animals, 38. 



of bones, 49. 



organs of, 59. 



production of, 30, 35, 44. 

 Motor areas, 311, 312. 

 Motor cells, 72. 

 Motor center, 141. 

 Motor nerves, 28, 30, 86, 299. 

 Mouth, 218. 

 Movement, mechanism of, 67-69. 



of involuntary muscles, 66, 67. 



reflex, 72, 73. 



voluntary, 71, 72. 

 Mucous membrane, of ear, 127. 



of eye, 106. 



of nose, 96, 97, 337. 



of small intestine, 224. 



of stomach, 221. 



of tongue, 94. 



of trachea, 183. 



structure of, 84. 

 Mucus, 84. 

 Muscle waste, 71. 

 Muscles, cardiac, 158. 



changes under stimulus, 63, 64. 



classification, 60. 



composition of, 59. 



contraction of, (52-65. 



coordination of muscular move- 

 ments, 69, 70, 133, 306, 307. 



dead, 65, 66. 



effects of stimulants on, 78. 



fatigue of, 70. 



function of, 37, 38. 



hygiene of, 73, 76. 



involuntary, 60, 66, 67, 81. 



nerve endings in, 61. 



nerves causing contraction of, 28. 



nervous stimulus of, 21. 



of blood vessels, 179. 



of frog, 17, 18. 



Muscles, papillary, 157. 



plain, see involuntary. 



properties of protoplasm in, 17, 18. 



proteids in, 217. 



reflex and automatic movements, 

 71-73. 



relaxation, 65, 80. 



skeletal, see voluntary. 



study of, 79-81. 



voluntary, 60, 61, 72, 73, 81. 

 Muscular fiber, of intestines, 224. 



of stomach, 221, 222. 



plain or unstriped, 60, 66, 81, 



striated or striped, 60, 63, 81, 158. 

 Muscular movement, coordination of, 



69, 70, 133, 306, 307. 

 Muscular power, 64, 05. 

 Muscular sense, 73, 86, 88, 89, 93. 

 Muscular system, 59-81. 

 Muscular tissues, 20, 21. 

 Musical sounds, 140. 

 Myosin, 205, 217. 

 Myosinogen, 217. 



Nails, function of, 84. 



structure of, 84. 

 Narcotics, effects of, 79, 332, 354; see 



alcohol, tobacco. 

 Nasal bones, 40. 

 Nearsightedness, 123. 

 Nerve cells, fatigue of, 32, 275, 317. 

 Nerve center, 30, 239, 275, 300. 

 Nerve endings, in muscle, 80. 

 Nerve fiber, 30, 32-34, 276, 277. 

 Nerves, afferent, 30, 86, 298. 



cerebral, see cranial. 



controlling circulation, 176-180. 



controlling heat production, 268. 



controlling respiratory apparatus. 

 198-200. 



controlling sweat glands, 258, 259. 



cranial, 28, 289-295; 40, 95, 96, lo:; t 

 104, 106, 108, 111, 112, 128, 130, 

 141, 142, 176-178, 229, 232. 



efferent, 30, 86, 298, 299. 



end organs of, 61, 292. 



for muscle, 61. 



function of, 298. 



motor, 28, 30, 86, 298, 299. 



of blood vessels, 179. 



of general sensibility, 298. 



