MICROVASCULAR ARCHITECTURE IN THE LEFT VENTRICULAR WALL OF CHILDREN HEART AS STUDIED BY LIGHT MICROSCOPY AND SCANNING ELECTRON MICROSCOPY
- VernacularTitle:儿童左心室壁微血管的立体构筑——光镜和扫描电镜研究
- Author:
Youwei WANG
;
Yici CHEN
;
- Publication Type:Journal Article
- Keywords:
Microvasculature;
Three-dimensional-architecture;
Alkaline phosphatase stain;
Scanning electron microscopy
- From:
Acta Anatomica Sinica
1955;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
The microvascular architecture of the three layers in left ventricular wall of25 normal children hearts was studied by scanning electron microscopy of the vascu-lar casts,histochemical method(alkaline phosphatase stain)and light microscopy ofIndia-ink injection.A true three dimensional spatial configuration of the microcir-culation unit was obtained.The arteriolar configuration had very different characteristics from one anotherin the three layers examined.The arterioles in the epicardium presented a similarmesh distribution;tree-like branches were distributed mainly in the myocardium;thearterioles in subendocardium appeared as a plexiform distribution.The spatial struc-tures of capillary had several different characteristics:a close capillary network inthe epicardium;the capillary mesh in the myocardium showed the appearance of anarcade-type and vertex-like arrangement and parallelly arranged to the myofibers;the one in the subendocardium seems to be sheet-like.Arteriole casts from the three areas were essentially the same in the fact thatthey frequently showed prominent endothelial nuclear impressions and ring-shapeimpressions.The unusual appearance of venules called“turnip root”and“ginsengroot”was found in the three regions.The diameter of capillaries are 7.2?1.9?m,4.3?1.0?m and 5.4?1.6?m in theepicardium,myocardium and endocardium respectively.The difference between thediameter of capillaries in three layers is highly significant(P0.05).
