Sykyryts'ka T. Development and Formation of the Topography of the Human Eyeball Muscles at an Early Stage of Ontogenesis.

The research deals with specification of the primordicum of the eyeball muscels, their vessels and nerves. The sequence of differentation and formation of their topography in the process of the intrauterine development and in newborns has been traced. The stages of intensive and delayed muscular growth have been determined during the prenatal period of ontogenesis. Et has been established thet the spatial arrangement of the muscular fixation points to the eyeball shifts closer to the limb in the process of development. Prevalence of the muscular growth over their nerves in the process of their develоpment has beеn stated. The peculiarities of the formation and terms of linkage between the intraorgan and extraorgan the intraorgan and extraorgan vessels have been investigated. Critical periods, morphologic preconditions and time of a possible inset of some congenital defects of the eyeball muscles have been elucidated.