Features of the formation of certain bones of the skull at the early stages of human ontogenesis

The study of morphogenesis and embryotopography skull bones is important not only in understanding the normal development human embryo but also will improve existing methods invasive treatment visualization various pathologies central nervous system children.The aim was to investigate peculiarities topography some during early stages ontogenesis.Material methods. We have studied 14 series consecutive histological sections embryos pre-fetuses aged 6 11 weeks intrauterine by using a set topical morphological (anthropometry, morphometry, histology, three-dimensional reconstruction).Results. frontal parietal appear at end embryonic period as mesenchymal rudiments that gradually expand upwards from primary points ossification (starting basolateral parts head). During 8th week IUD, germ ectomeningeal capsule detected form thin plate, close brain. At beginning pre-fetal period, signs membranous are revealed; develop paired rudiments, which fuse, accompanied active angiogenesis.Conclusions. centers embryological type. Two they merge. prenatal rudiment small wing sphenoid, spheno-ethmoidal cartilage merging both bone detected.