title: [Morphology of the subventricular layer of the cerebral hemispheres in newborn infants from the 23rd to the 40th week of intrauterine life].
abstract: The development of SVL was studied in 6 frontal sections made from each of 82 brains of eutrophic neonates. Histological development of SVL was presented by diagrams and microphotographs. Relative figures of the dark and light cells of SVL were established: light cells percentage increased in a linear way during the brain maturation [10-15% in the 28th week, 30% in the 31st week, 50% in the 34th week, 60% in mature neonate, 85% in an infant of 2 months]. Detailed developmental morphology was followed in the dark areas of SVL: SVL was homogeneously dark in fetuses till the weight of 800 g, later light areas occurred which quite prevailed in mature neonates. Dark areas were represented by peripheric dark zone, paraganglionic cellular zone, perivascular zones, subependymal dark zone and dark cellular stripe. Normal developmental changes of the SVL are not to be mistaken for the pathological ones in autoptic material. Findings are discussed on the base of the data from literature about the production of glia and the SVL development.
mesh_terms: D002552:Cerebral Ventricles / Q000166:cytology* / Q000196:embryology / Q000254:growth & development; D004805:Ependyma / Q000166:cytology* / Q000196:embryology / Q000254:growth & development; D005333:Fetus / Q000166:cytology*; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn
vernacular_title: Morfologie subventrikulární vrstvy mozkových hemisfér novorozenců v období 23.--40. týdne intrauterinního zivota.