648 



INDEX 



Sclera, 575 



Sclerotome, 163, 179, 293, 307 

 Scrotum, the, 420, 426 

 Sebaceous glands, the, 442 

 Secondary egg membranes, 13 



oocyte, 22, 24 

 Secretory function, 329 



Segmental part of epichordal brain, 457, 459 

 Segmentation (see also Cleavage), 40 



cavity, 47 



cells, development of isolated group of, 



to form monsters, 603 

 Segments, primitive, 68, 139, 293, 300 



of segmental brain and cord, 505, 506 

 Semilunar ganglion, 460 

 Seminal filament or spermatozoon, 10, 13 



vesicles, 416 



Seminiferous tubules, 411 

 Sense organs, special, 563 



anomalies of, 591 



ear, 582 



eye, 563 



nose, 579 

 Septa, the, 233 



anomalies of, 285 

 Septal marginal layer, 514 

 Septum aorticum, 235 



atriorum, 233 



medullae, 514 



pellucidum, 469, 552 



spurium, 236 



superius, 233 



trans versum (see also Diaphragm), 372, 

 374, 377 



ventriculorum, 235 

 Serosa, 103 

 Sertoli, cells of, 17, 21 

 Sex cells, 404 



cords, 405 



determination of, 27 

 Sexual elements, 404 

 Sheaths, myelin (medullary), 478, 494 



neurilemma, 478 



Sherrington, concerning effectors and recep- 

 tors, 448 



Shoulder girdle, 199 

 Siamese twins, 597 

 Sigmoid colon, 340 



mesocolon, 381 

 Sinus, cavernous, 251 



confluence of, 252 



coronarius, 254 



frontal, 580 



Sinus, maxillary, 580 

 petrosal, 253 

 sagittal, 253 

 sphenoidal, 580 

 terminalis, 218 

 transverse, 252 

 venosus, 222, 232 

 Sinusoidal circulation, 347 

 Sinusoids, 260, 346, 347 

 Situs viscerum inversus, 354 

 Skeletal musculature, see Musculature, skeletal 

 system, anomalies of, 209 

 appendicular skeleton, 198 

 axial skeleton, 178 

 development of the, 161 



of joints, 205 

 head skeleton, 186 

 notochord, 178 

 ribs, 184 

 sternum, 185 

 vertebrae, 179 



Skeleton, axail (see also Axial skeleton), 178 

 appendicular, (see also Appendicular 



skeleton), 198 

 Skin, the, 437 



anomalies of, 4/14 

 dermis, 438 

 epidermis, 437 

 glands of, 442 

 pigment of, 438 

 Skull, defects of, 604 



development of, 186 

 Smegma embryonum, 442 

 Smith, G. Elliott, concerning archipallium, 469 

 Smooth muscle, 311 



histogenesis of, 312 

 Sole plate, 439 



Somaesthetic area of pallium, 470, 557, 558, 

 Somatic area (see also Pallium, precentral area), 



558 



segmentation, 450, 460 

 structures, 458 

 Somatochrome cells, 489 

 Somatopleure, 71, 105, 370 

 Somites, mesodermic, 68 

 Sperm, 10, 17 

 Spermatids, 17, 19, 28 

 Spermatocytes, 17 

 primary, 17, 24 

 secondary, 18, 22, 24, 28 

 Spermatogenic cells, 17 

 Spermatogenesis, 17 

 Spermatogonia, 17, 24 



