646 



INDEX. 



Pelvis of the kidney, 350 

 Penis, corpus cavernnsum of, 153 



development of, 613 



erection of, explained, 153 



reflex action in, 153, 399 

 Pepsin, 23, 222 

 Peptone, 229 

 Perception of sensations by cerebral 



hemispheres, 383, 420 

 Perichondriuin, 43 



Perilymph, or fluid of labyrinth of 

 ear, 533 



use of, 541 

 Periosteum, 47 



Peristaltic movements of intestines, 

 376 



of stomach, 231 

 Permanent cartilage, 43 



teeth, 52 

 Perspiration, cutaneous, 344 



insensible and sensible, 344 



ordinary constituents of, 345 

 Peyer's glands, 241 



functions of, 243 



patches, 241 



resemblance to vascular glands, 

 245, 326 



structure of, 243 



Pharynx, action of in swallowing, 213, 

 396, 440 



influence of glosso-pharyngeal 



nerve on, 428 

 of pneumogastric nerve on, 



439, 440 

 Phosphates in tissues, 25 



present in albumen, 22 

 in blood, 73, 75 

 in urine, 366 

 Phosphorus in human body, 25 



union of with oxygen producing 

 heat, 193, note. 



in urine, source of, 366 

 Phrenology, 422 

 Physiology, definition of, 13 

 Pia mater, circulation in, 151 

 Pigment, 42 



of choroid coat of eye, 500 



composition of, 43 



of hair, 302, 340 



of skin, 333 



uses of, 43 



Pigment-cells, form of, 31, 42 

 Pineal gland, 424 

 Pinna of ear, 527 



" Pins and needles," sensation of, 380 

 Pitch of voice, 486 

 Pith of hair, 340 

 Pituitary gland, 424 

 Placenta, 587, 589 



formation of, 591 



foetal and maternal, 593 



Placenta, relation of to the liver, 263 



structures composing, 593 

 Plants, distinctions from animals, 15 

 Plexuses of nerves, 372 



terminal, 373 

 of spinal nerves, relation to cord, 



390 



Pneumogastric nerve, 438 

 distribution of, 438 

 mixed function of, 438 

 influence on action of heart, 113 

 on deglutition, 214 

 on digestion, 235 

 on functions of larynx, 438, 



439 



of oesophagus, 440 

 of lungs, 440 

 of pharynx, 439 

 on movements of stomach, 



236 



on respiration, 406, 441 

 on secretion of gastric fluid, 



236 

 on sensation of hunger, 234 



of thirst, 234, 235 

 origin of from medulla oblongata, 



406 

 Poisoned wounds, absorption from, 



298 



Poisons, narcotic, introduced in stom- 

 ach, 235 



Polarity of muscles, 467, note. 

 Polygamous birds, their cerebella, 417 

 Pons Varolii, its structure, 409 

 Portal blood, characters of, 79 

 canals, 254 

 circulation, 90 



function of spleen with re- 

 gard to, 332 



veins, arrangement of, 254 

 Portio dura, of seventh nerve, 433 



mollis, of seventh nerve, 533 

 Post-mortem rigidity. See Rigor 



Mortis. 



Posture, effect of on the heart's ac- 

 tion, 109 



Potassium, salts of, in fluids and tis- 

 sues, 25 

 Pregnancy, absence of menstruation 



during, 569 

 corpus luteum of, 572 

 influence on blood, 76 

 Presbyopia, or long-sightedness, 512 

 Pressure on eye, effects of, 522 

 Primary membrane, 314, 318 

 Primitive dental groove, 53 



fasciculi and fibrils of muscle, 



458, 459 



groove in embryo, 581 

 Principles, nitrogenous, 21 

 non-nitrogenous, 20 



