598 INDEX 



Spinal cord, paths of conduction of afferent and eflferent impulses, 488 , 

 400 

 properties and functions of, 483 

 reflex action tlirousli, 484 

 result of injury to, 20, 473, 477 

 transmission of nervous impulses by, 486 

 white matter of, 456, 458 

 vaso-niotor centres in, 494 

 ganglia, 460 



nerves, 455, 4;?6, 475, 493 

 Splanchnic nerve, abdominal, 71 

 Spleen, 9 



its functions, 222 

 corpuscles of the, 222 

 -pulp, 221 

 Splenic artery and vein, 221 

 Spongy bones of nose, 364 

 Spot, blind, of eye, 427 



germinal, of ovum, 537 

 yellow, of eye. 423 

 Squinting, double vision a result of, 449 

 Stapes (a stirrup), 369 et .wi/. 



its attachments, 37o 

 Stapedius muscle, 371 



possible use of, 389 

 Starch, action of ptyalin on, 242, 261 

 as food, 226 



converted into sugar in alimentary canal, 216 

 by pancreatic juice, 261 

 by ptyalin, 242, 261 

 Starting at noise, a cerel)ral reflex action, 526 

 Stereoscope (o-Ttpeb?, solid : a-Koniui, 1 view), 450 

 Sterno-costal cartilages, 546 



embryonic growth of, 550 

 Sternum (<TTepvov. the breast), 16, 135-138, 147, 316 

 Stiffening of muscle after death, 297 

 Stimulation of nerves, 72, 74, 241 



of cerebral hemispheres, 530 



of muscles, sec M uscles, contractility of 



tetanic contraction of 

 Stimulus, 14, 341 



Stoke's agent, action on blood, 1:^5 

 Stomach (a-Toixa, a mouth), 244 



walls of, 227, 244 

 Stratum corneum and mucosum of epidermis, 540, 541 

 Striped muscular fibre, 289 



in heart, 44, 303 

 Stroma, 97, 98 

 Sub-arachnoid space, 453 

 Snb-diind space, 453 



Sublingual gland. 237 * 



Submaxillary gland, 237, 238 

 Substantia gelatinosa, 466 

 Succus entericus, 262 



Suction pump, respiratory machinery regarded as, 157 

 Sugar, action of, in intestines. 267 



in blood increased by injury to the medulla oblongata, 520 

 conversion of glycogen into, 217 



