THE MORPHOLOGICAL STUDY OF THE DEVELOPMENT OF ENDOCARDIAL CUSHION AND VENTRICULAR SEPTUM OF CHICKEN EMBRYO
- VernacularTitle:鸡胚心内膜垫及室间隔的发生
- Author:
Yihong WANG
;
Xin YIN
;
Xiuxiong ZHU
- Publication Type:Journal Article
- Keywords:
Development of heart;
Endocardial cushion;
Cardiac jelly;
Interventricular septum;
Chicken embryo
- From:
Acta Anatomica Sinica
1954;0(02):-
- CountryChina
- Language:Chinese
-
Abstract:
The development of the endocardial cushion and the ventricular septum of chicken heart was studied with SEM, TEM, light microscopy and histochemical methods. The results are as follows:1. The development of endocardial cushion begins from the proliferation of the endothelial cells which form cushion cells when these cells enter the cardiac jelly. Cushion cells also proceed mitosis and migrate toward the myocardium, and the endothelial cells cease proliferation when the reserve layers of cushion cells were formed. The fused endocardial cushion participates in the formation of atrioventricular orifice, the right tubercle prolongs toward the ventricular septum and eventually fuses with it.2. The cardiac jelly of endocardial cushion contains a great deal of hyaluronic acid which arranges in "trails", pioneering cushion cells migrate along the "trails" and change the component and arrangement of the matrix.3. Muscular ventricular septum is formed by aggregation of trabeculae inside the interventricular sulcus. The dorsal part of the ventricular septum fuses with the lower part of right tubercle of endocardial cushion and the ventral part fuses with the conus septum.
