Klin Onkol 1992; 5(6): 181-186.
Terminal part of the blood vessels of the human spinal cord segments C7, Th5 and L3 was evalutated by methods of the morphometric analysis of histological speciments. Differencies of the vascular network from various regions of the gray and white matters and differencies between segments from various levels of the spinal cord were found.
The relative area of capillars in the gray matter is higher than in the white one and it is increasing from posterior to anterior spinal cord horns. The ralative capillar area of the gray matter is higher in the thoracic segment than in the cervical one. In the white matter, the highest capillar area was found in the anterior columns, the lowest in the deep parts of posterior columns. Cervical white matter has the lowest relative capillar area, the lumbar white matter has the highest capillar area.
The results are compared to findings in the irradiated spinal cord. The more radiosensitive parts have been shown as having the lowest values of the relative capillar area. Possible explanation is discussed.
