QUANTITATIVE STUDY ON THE MICROVAS-CULAR SYSTEMATIC ARCHITECTURE OF THE CEREBRAL CORTEX OF THE RABBIT
- VernacularTitle:家兔大脑皮质微血管系统构筑学的定量研究
- Author:
Gongmei XU
- Publication Type:Journal Article
- Keywords:
Microvascular architecture;
Capillary network;
Cerebral cortex;
Quantitative analysis;
Rabbit
- From:
Acta Anatomica Sinica
1957;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
The microvascular systematic architecture of the cerebral cortex were studied in six rabbits. The internal carotids were injected with Chinese ink via a cannula. After fixation, brains were removed and made sections of 80-220?m thick. Some sections were counterstained with HE or Nissl method in order to observe the histological structure of the microvessels and the relationship between the vessels and the nervous tissue.Morphometric measurements of the microvessels were made according to the Strahler system. Results were as follows.(1) In the cerebral cortex, the microarteries and microvenes could be subdivided in to four orders. (capillaries were considered as O order), Perforating branches were perpendicular to the surface of the cerebral cortex and the distribution area of a microartery trunk was in a columnar shape with a radius of 204.5 ?m. This was in compliance with the size of a functional column of the cerebral cortex.(2) For microarteries from order 1 to 4, the branching ratio was 3.72, the diameter ratio was 1.42, the segmental length ratio was 1.82; while for microvenes from order 1 to 4, the branching ratio was 3.25, the diameter ratio was 1.73, and the segmental length ratio was 2.25.(3) The total length of the true capillary network per unit volume of the cerebral cortex was 5.82?10~5?m/mm~3. The density of the capillary network of the cerebral cortex was highest in fourth and fifth layers, while the first layer was rather scarce in capillary network. The number of neurons within each lattice of the capillary network was most numerous in the fourth layer, 4.36 per lattice.According to the results mentioned above, the functional significance of the microvascular architecture and the microcirculation dynamics of the brain was also discussed.
