1310 



INDEX 



Optic chiasma, 386, 405 

 cup, 502 

 disc, 554 

 radiations, 422 

 thalamus, 373 



functions of, 393 

 tracts, 386, 405, 551 

 Optical activity, 61 



in sugars, 60 

 Orbit, anatomy of, 493 

 Organ of Corti, 609 



Organic compounds, chief, of body, 45 

 Organs, evolution of, 34 

 Ornithine*, 82 

 Osazones, 62 

 Osmometer, 140 

 Osmosis, 129-136 

 Osm otic t machine, 123 



'phenomena in cells, 22 

 pressure, 121 



of blood, 906 

 of colloids, 140 

 of protein, 75 

 effects of, 134 

 measurements of, 123 



by blood corpuscle 



method, 125 

 by depression of 

 freezing point, 

 127 



by plasmolysis, 125 

 by vapour tension, 



127 

 relation to electrical 



changes, 171 

 Otolith organ, 397 

 Otoliths, functions of, 656 

 Ova, development of, 1273 

 Ovary, changes in, 1275 

 Ovulation, 1275 

 Oxidation in cells, 25 



of fats, 155, 835 



of fatty acids, 805 



mechanism of, 156 



relation to muscular contraction, 



237 



in tissues, 1155-1159 

 Oxyacids, 49 



formation in plants, 114 

 Oxygen capacity of blood, 898 



consumption by nerve, 256 



functions of, 25 



influence on muscular contraction, 



217 



lack of, 1138 

 life without, 26 

 source of, 39 

 supply to muscle, 1013 

 Oxyhaemoglobin, 99 



molecular weight of, 74 

 Oxyproline, 84 



PACCHIONIAN BODIES, 463 

 Pain, cause of, 634 

 referred, 476 

 in spinal animal, 331 

 Pancreas, effects of extirpation, 847 



histological changes in, 767 

 Pancreatic juice, 748-758 



activation of, 750 



Pancreatic juice, action on carbohydrates, 752 

 on fats, 753 

 on intestinal secre- 

 tion, 765 

 on milk, 752 

 on proteins, 749 

 conditions of activity, 750 

 secretion of, 753 

 Pangene, 20 



Paradoxical contraction, 282 

 Paraglobulin, 95 

 Paralysis, cortical, 439 

 Paramucin, 104 

 Paramyogen, 213 

 Paramyosinogen, 95 

 Paraplegia, spastic, 336 

 Parathyroids, functions of, 1241 

 Parturition, 1285-1288 



nervous mechanism of, 1288 

 Pelvic visceral nerves, 471 



action on bladder, 1212 

 Pentose, 61 



in nucleic acid, 102 

 tests for, 61 

 Pepsin, action of, 97 

 Peptones in gastric digest, 730 

 Perimeter, 549 

 Peripheral aberration of eye, 532 



nervous system, 469 

 Permeability of membranes, 134 



of surface layer of cells, 22 

 Peroxides, function in carbon assimilation, 



110 



Pfliiger's law, 266 

 Phagocytosis, 859, 1071 

 Phenyl alanine, 77, 83 

 Phenyl hydrazine tests for sugars, 62 

 Phloridzin diabetes, 844 

 Phosphates of urine, 1163 



estimation of, 1179 

 Phosphatides, 57 

 Phospholipines, 57, 58 

 Phosphoproteins, 98 



conversion into nuclein, 110 

 digestion in stomach, 733 

 Phosphoric acid in nucleic acid, 100 

 Phosphorus, sources of, 43 

 Phototaxis, 27 

 Phrenosin, 58 



Physiology, scope of, 1, 7, 35 

 Pilomotor nerves, 469 

 Pineal gland, 604, 1245 

 Pituitary body, 1242-1245 

 Placenta, formation of, 1284 

 Plants, assimilation of nitrogen by, 4 1 



chemical process in, 38 

 Plasma, blood-, 854, 882 



muscle-, 212 

 Plasmolysis, 22, 30, 125 

 Plasome, 20 

 Plastids, 17, 33 



permanence of, 20 

 Plethora, 1058 



Poikilothermic animals, 1221 

 Polarimeter, 51 

 Polypeptides, 88 



isoinerism in, 88 

 Polysaccharides, 62, 67 

 Pons Varolii, 368 



functions of, 392 



