[Development and functional morphology of the ependymal blood vessels of the lumbosacral spinal cord in human postnatal ontogeny].
In 200 persons (at the age of newborn up to 96 years) development of extra- and intraependimal blood vessels beginning from the I lumber up to the V sacral segment has been studied by Kampos' method in the author's modification. At the level of the V lumbar segment ultrastructural morphology of the ependimal capillaries has been investigated. By 30-35 years of age, owing to fusion of the intramedullary blood vessels, powerful circular anastomoses are forming around the ependima; they give origin to the intraependimal arterioles. The latter, subdividing into branches, form compact ependimal capillary networks. In elderly and old persons the density of the network of both types of vessels decreases as a result of the involution process. Ependimal gliocytes tightly adjust the capillaries which possess wide pericapillary spaces. In the capillary endothelium endocytosis is definitely seen, there are pores and fenestrae; it is connected with metabolic intensity of the gliocytes and their possible participation in the secretory process.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002196:Capillaries / Q000254:growth & development; D002648:Child; D002675:Child, Preschool; D004805:Ependyma / Q000098:blood supply* / Q000254:growth & development; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008161:Lumbosacral Region; D008297:Male; D008875:Middle Aged; D013116:Spinal Cord / Q000098:blood supply* / Q000254:growth & development
Razvitie i funktsional'naia morfologiia krovenosnykh sosudov épendimy poiasnichno-krestsovogo otdela spinnogo mozga v postnatal'nom ontogeneze cheloveka.