Soleus muscle (contd.), surgical anatomy of, Sphenoid bone (contd.), great wings of, 134 1461, 1462 zonularia, 819 Sperm cells, 11, 12, 16, 1288 Spermatic artery, internal, 928 abnormalities of, 1053 morphology of, 1047 fascia, 475, 477 abnormalities of, 1058 Spermatids, 17 of first order, 12, 16 Spermatozoa, 17 axial filament, 17, 18 body, 18 centrosomes, 17 head, 17 neck, 17 sheath, mitochondrial, of, 18 alæ, development of, 138 orbital fissure, inferior, 137 pterygoid lamina of, 137 Sphenoidal angle of parietal bone, 119 conchæ, 139 Sphenoidal crest of sphenoid bone, 135 process of palate, 152 skiagraphs of, 1372 surgical anatomy of, 1372 Spheno-mandibular ligament, 312 Spheno-palatine artery, 900 ganglion, 775, 777 nerves, 775 roots of, 777 Spheno-parietal sinus, 975 suture, 164, 166 Spheno-petrous fissure, 176 Spheno-squamous suture, 176 Spheno-vomerine canal, 279 Sphincter ani externus, 486, 1232 action of, 1232 internus, 1232 pupillæ, 814 pyloric, 1166, 1174 recti, 1229 vaginæ, 487 vesicæ, 1284 Spina or Spine, angular, of sphenoid, 136, 167 frontal, 116 helicis, 828 iliaca anterior inferior, 229 superior, 228 posterior inferior, 229 surface anatomy of, 1455 ischiadica, 232 sexual differences of, 237 nasal, 116 nasalis anterior, 146, 164 posterior, 174 peroneal, 260 variations in, 282 pubic, 233, 1458 scapulæ, 202 sphenoidal, 136, 167 suprameatal, 126, 1366 trochlear, of frontal bone, 117 Spinal arteries, 938– – formation of, 1029 foramen of cervical vertebræ, 90 of lumbar vertebræ, 95 ganglia, 685 medulla, 517, 539 INDEX. Spinal medulla (contd.), anterior median fissure of, 521 surgical anatomy of, 1443 arrangement of nerve-fibres of white matter cauda equina of, 519, 526 cell column, intermedio-lateral, 530 changes in gray matter of, 524 columns of, 22, 520, 523, 528 intermedio-lateral, 530 lateral, 523, 529 posterior, 522, 523, 525, 529 postero-lateral, 529 retro-postero-lateral, 529 commissure of, anterior white, 523, 539 gray, 523, 539 posterior, 523 component parts of white matter of, 531 conus medullaris of, 518, 524, 525 development of, 31, 33, 35, 520 dorsal nucleus of, 531, 538 enlargements of, 519, 524 surgical anatomy of, 1443 fasciculi of, anterior proprius, 535, 537, 538 lateral, 535 bulbo-spinal, 537, 538 collateral fibres of, 534, 535, 539 lateralis proprius, 538 olivo-spinal, 538 fasciculus cuneatus of, 526, 533 gracilis of, 526, 533 solitarius of, 598 (fasciculus of) posterior proprius, 535 rubro-spinal, 537, 538 septo-marginal, 535 spino-cerebellar anterior, 537, 538 posterior, 537, 538 spino-tectal, 537 (fasciculus of) spino-thalamic, 535, 537 anterior, 537, 538 posterior, 537 tecto-spinal, 537, 538 vestibulo-spinal, 537, 538 filum terminale of, 518, 526 externum, 526 internum, 526 fissures of, 522 antero-median, 522 lateral, 522, 525 posterior, 521, 522, 525 postero-lateral, 584 solitarius, 598 gray matter of, 523, 525 inferior limit of, in child, 517 internal structure of, 523 intersegmental association fibres of, 535, 538 Spinal medulla (contd.), length of, 517 nerve-fibres in gray matter of, 531 origin of nerves from, 519, 529, 533 postero-median column, 529 processus reticularis of, 524 regional differences in, 519, 527 regions of, 519 relation of, to vertebræ, 517, 1422 segments of, 519 sensory and motor distribution of various segments of, 744, 752 septa of, 521, 522 substantia gelatinosa Rolandi, 523, 528 grisea, 520 substantia grisea centralis of, 528 reticularis of, 564 sulci of, 522 sulcus lateralis posterior of, 522 summary of chief characters, 527 tract or tracts of Burdach, 526, 533 comma (fasciculus interfascicularis), 533 of Gowers (fasciculus antero-lateral lateral cerebrospinal (crossed), 536, 538 of Lissauer (postero-lateral), 534 veins of, 977 ventriculus terminalis of, 526 Spinal nerves, 519, 678 anterior rami of, 692 anterior root, 520 development of nerve-roots, 679 distribution of the, 687 distribution of, to muscles and skin of the limbs, 744 lower limb, cutaneous nerves, 747 muscular nerves, 748 upper limb, cutaneous nerves, 744 muscular nerves, 745 white rami communicantes of, 687 divisions or rami of, 686 posterior rami of, 687 Spinalis dorsi muscle, 442 Spino-thalamic tract, 537, 538 Spinous process of cervical vertebræ, 90, 93 of sacrum, 97 INDEX. Stomach (contd.), pyloric canal of, 1169 orifice of, 1169, 1173 surface anatomy of, 1416, 1417 surgical anatomy from the back, 1439 position of, 1416 surgical anatomy of, 1416, 1417 sphincter of, 1166, 1174 pylorus, 1165 radiography of, 1417 relations of, 1416 serous coat of, 1174 at birth, 1171 submucous coat of, 1173 sulcus intermedius of, 1167 surgical anatomy of, 1416-1418 X-ray examination of, 1173 relations and connexions of, 1169 Stomata of capillaries, 867 separation into nose and mouth, 49 Strand fronto-pontine, 653 corneum epidermis, 857, 859 cutaneum membranæ tympani, 835 germinativum epidermis, 857 unguis, 859 granulosum cerebelli, 581 epidermis, 858 ovarii, 1314 griseum centrale pedunculi cerebri, 584 colliculi superioris, 586 interolivary, 556 lemnisci, 586 longitudinale musculare ventriculi, 879 lucidum, 858 mucosum epidermis, 857 membranæ tympani, 835 opticum, 586, 815 colliculi cerebelli, 580 superioris, 586 papillare of skin, 857 pigmenti retinæ, 816, 817 radiatum membranæ tympani, 835 reticulare of skin, 857 spongiosum, 57 development of, 304 of ankle-joint, 353 of carpo-metacarpal joints, 333 of elbow-joint, 325 of hip-joint, 341 of intercarpal joints, 331 interosseous, of leg, 350 Stratum, synovial (contd.), of intertarsal joints, 358 of knee-joint, 348 of mandibular joint, 312 of metacarpo-phalangeal joints, 333 of radio-ulnar joint, 327 of shoulder-joint, 322 sectionum corporum quadrigeminorum, 586 Streak, primitive, 23, 26 Stretching the sciatic nerve, 1457 of corpus callosum, 629 fossæ rhomboideæ, 550 olfactorii lobi intermedia, 624 of Retzius, 1122 terminalis, 610, 635, 636, 642 veins, 970, 971 Structure of bones, 83 of radius, 216 surgical anatomy of, 1450 of ulna, 213 surface anatomy of, 1451 Stylo-glossus muscle, 463 ✓ Stylo-hyals, 132, 159 Stylo-hyoid ligament, 313, 1134 action of, 462 Stylo-mandibular ligament, 313, 1134 Stylo-mastoid artery, 895 foramen, 129, 177 Stylo-pharyngeus muscle, 465 Subacromial bursa, 323 Subanconeus muscle, 382 Subarachnoid fluid, 671 surgical anatomy of, 1227 abnormalities of, 1055 branches of, 910 development of, 1027-1028 morphology of, 1046 surgical anatomy of, 1252, 1255 groove, 111 544 of stomach, 1167 intertubercular, of humerus, 206 intraparietal, 661, 644, 664 ossis lacrimalis, 147 lateral, of brain, 653, 1359, 1360 posterior medulla oblongata, 544, 547 limiting, of Reil, 654 longitudinal, of cerebrum, 540, 676 malleolaris, 253, 249 medianus posterior medulla spinalis, 522 musculi flexoris hallucis longi calcanei, 260 peronæi calcanei, 260 |