INDEX AND GLOSSARY 



345 



Plexus, nervous, lumbar, 226 



of MEISSNER (submucous plex- 



us), 53, 241 

 mesenteric, 226 

 myenteric (plexus of AUER- 



BACH), 241 

 pelvic, 226 

 pharyngeal, 226 

 sacral, 226 



solar. See Plexus, celiac. 

 submucous (plexus of MEISS- 

 NER), 53, 241 

 vesical, 226 

 Poisons, susceptibility of neurones 



to, 97, 101-104, 231, 258 

 Polarity of the neuron, 39, 52, 97 

 POLIMANTI, O., 135, 142 

 Pons (pons VAROLII), a projection 

 from the under surface of the 

 medulla oblongata below the 

 cerebellum, 114, 118-120, 121, 

 122, 143, 154, 158, 187, 188, 

 220 



nuclei of. See Nucleus, pontile. 

 Portio dura facialis (motor facial 



root), 146 



intermedia. See Nerve, interme- 

 diate. 

 major trigemini (sensory root of 



the trigeminus), 146 

 minor trigemini (motor root of the 



trigeminus), 146 



Posterior, as used in this work means 

 toward the tail end of the body; as 

 used in the B. N. A. tables it 

 means toward the dorsal side, 115, 

 116 

 Posture, apparatus of, 77, 89, 130, 



137, 2.54 

 Procuneus, 119 



PRBNTISS, ('. \V., 198, 199, 203 

 Pressure, apparatus of. See Touch, 



apparatus of. 



Primitive sheath. See Neurilemma. 

 PRINCE, MORTON, _><>.->, 297, 300 

 Prionotus caroliuus, nervous system 



of, 151, 153 



Process, axis-cylinder. See Axon. 

 ciliary, of eyeball, 143, 146, 232, 



247 



protoplasmic. See Dendrite. 

 Processus reticularis, the Formatio 

 reticularis of the spinal cord, 127, 

 129 



Projection centers, those parts of the 

 cerebral cortex which receive or 

 give rise to Projection fibers ; cf . 

 Center, cortical, 166, 273, 282, 

 283, 284-289, 292, 306 

 fibers, fibers which connect the 

 cerebral cortex with the brain 

 stem, 164, 165, 166, 167, 168, 

 221, 266, 268, 269, 271, 284- 

 287, 289 



Proprioceptor, a sense organ lying 

 within the deep tissues of the 

 body for the coordination of 

 somatic reactions, 77, 86 

 apparatus of, 130, 132, 137, 138, 

 139, 141, 145, 163-167, 172, 175- 

 179, 2.54, 286 



Prosencephalon (forebrain), the Di- 

 encephalon and Telencephalon; 

 sometimes applied to the Cerebral 

 hemispheres only, 117-119, 121, 



160 



Protista, 22 



Protopathic sensibility, a primitive 

 type of diffuse cutaneous sensi- 

 bility, especially on hair-clad 

 parts, 84, 85, 132 

 Protoplasm, living substance, 24, 69, 



96 



nervous, 38, 69, 96 

 Protozoa, one-celled animals, 24, 314 

 Psalterium. See Lyre of David. 

 Pseudocode. See Cavum septi pel- 



lucidi. 



Psychogenesis, the development of 

 mind, 249, 256, 257, 294, :;(>:>. 

 312-316 

 Psychology, general, 297 



physiological, 297 



Pulvinar, a visual center in the 

 thalamus, 150. 162, 163, 164, 167, 

 170, 208, 212, 2S4. 3<X> 

 PrKKiN.n:, cells of, 51, 52, 190, 191, 



192 



Purple, visual, 207 

 Putamen, a part of the Nucleus lenti- 



formis. 



Pyramid (pyramis), an eminence on 

 the ventral surface of the medulla 

 oblongata produced by the pyra- 

 midal tract and from which the 

 latter receives its name, 114, 155 

 Pyramids, deciissation of, 131 

 Pyriform lobe. See Lobe, pyriform. 



