642 



INDEX 



Muscles, classification of, 79; biceps, 

 79; ciliary, 195, 255, 261 ; digastric, 

 82; extensor, 126; of eyeball, 246; 

 flexor, 118; hygiene of, 130; of iris, 

 249; of larynx, 549; opposing, 

 equilibrium of, 122; origin and in- 

 sertion, 82; papillary, 329, 342; 

 paralysis of, 130; relation of to 

 bones, 79; respiratory, 394; special 

 physiology of, 118. 



Muscle-fiber, 83. 



Muscle groups, functional, 123. 



Muscle sense, 164, 172, 205, 206, 207. 



Muscle, smooth, 79; heat rigor in, 

 116; mechanism of contraction of, 

 116; physiology of, 114. 



Muscle spindle, 85. 



Muscle stroma, 89; tissue, 33. 



Muscular contraction, 94; chemistry 

 of, 106; energy relations in, 106; 

 extent of, 96. 



Muscular efficiency, 106. 



Muscular energy, source of, 104; 

 exercise, respiratory changes in, 

 425. 



Muscular tissue, 33. 



Muscular work, 98; metabolism of, 

 507. 



Muscularis mucosse, 453. 



Myelin sheath, 138. 



Myelination, successive, 172. 



Myenteric reflex, 474 



Myogen, 89. 



Myogenic theory of heart-beat, 349. 



Myopia, 262. 



Myosin, 89. 



Myxedema, 202. 



Nails, 33, 534. 



Nares, 62. 



Nasal bone, 60; duct, 246. 



Nausea, 207. 



Nearsightedness, 262. 



Nerve, 135; abducens, 150; auditory, 

 152; depressor, 351, 376; facial, 

 152; glossopharyngeal, 152; hypo- 

 glossal, 152; inferior maxillary, 151; 

 median, 333; oculomotor, 150; ol- 

 factory, 150; ophthalmic, 150; op- 

 tic, 35, 150; patheticus, 150; 

 phrenic, 149; pneumogastric, 152; 

 sciatic, 150; spinal accessory, 152; 

 splanchnic, 375, 451; superior 

 maxillary, 151; trigeminal, 150; 

 vagus, 152. 



Nerve-cells, 136; sensory, cell-bodies 

 of, 136. 



Nerve end plate, 85, 198. 



Nerve elements within heart, 347. 



Nerve energies, specific, 204. 



Nerve-fibers, indefatigability of, 156. 



Nerve impulse, definition, 135; how 

 aroused, 156; nature of, 157; speed 

 of, 156; spread of in both directions, 

 156; methods of studying, 155. 



Nerve paths, afferent, 170; efferent, 

 170; method of tracing, 171. 



Nerves, autonomic, 139, 193; cardiac, 

 351; cranial, 139, 150; of intestines, 

 455; of respiration, 402; secretory, 

 483; spinal, 139, 147; sympathetic, 

 139, 193; trophic, 483; vasocon- 

 strictor, 374; vasodilator, 377; 

 vasomotor, 373. 



Nervus erigens, 456, 565. 



Nervous co-ordination, 28, 38. 



Nervous fatigue, 156, 198. 



Nervous irradiation, 353. 



Nervous system, 135; autonomic, 

 139, 154, 193; central and periph- 

 eral, 138; membranes of, 139; sym- 

 pathetic, 139, 154, 193. 



Neural canal, 56; tube, 141. 



Neurilemma, 138. 



Neurogenic theory of heart-beat, 349. 



Neuroglia, 139. 



Neuromuscular fatigue, 198. 



Neurons, 136; association, 137; bi- 

 polar, 137; conduction in, 155; 

 motor, 136; post ganglionic, 194; 

 preganglionic, 194; sensory, 136. 



Njcotine, 194, 351. 



Nictitating membrane, 245. 



Nipple, 580. 



Nitrogen, 9. 



Nitrogen equilibrium, 512. 



Nitrogenous extractives, 13. 



Nodal points of eye, 267. 



Nodes of Ran vier, 138. 



Noise, 223. 



Nose, bones of, 60. 



Notes, musical, 223. 



Nourishment, of brain, 190. 



Nuclear spindle, 25. 



Nuclei, nervous, 153; in medulla, 154; 

 auditory, 174; caudate, 153; cu- 

 neate, 173; dentate, 153; gracile, 

 173; lenticular, 153; red, 153; of 

 cerebellum, 165. 



Nucleoprotein, 13. 



Nucleus of cell, 8; structure of, 23. 



Nutrients, 429, 432; functions of, 433; 

 occurrence of in foods, 429. 



Nutrition, see Metabolism. 



Nutrition of embryo, 578. 



Nutritive tissues, 31. 



Nutritive value, of albuminoids, 510; 

 of carbohydrates, fats, and pro- 

 teins, 507. 



