胎儿胃动脉微血管的实验观察

Experimental survey of the arteral microvascular of the stomach wall in fetus

采用ABS灌注法对30例新鲜胎儿尸体(6～10月)的胃壁内动脉的微血管进行了观察和测量.结果表明,浆膜下丛呈干型,血管稀疏;肌丛由浆膜下丛和粘膜下丛返支构成,各部肌层血管密度,大弯最高,小弯最低;粘膜下丛在胃底部密度最高,幽门后壁和胃小弯密度最低;粘膜动脉发自粘膜下丛,动脉间有吻合支,粘膜丛血管密度胃底最高,小弯最低,粘膜血管丛内未见到动脉-静脉吻合.

We injected ABS to the arteries of 30 fetuses to study the arteral microvascular of stomach. It was found that the subserosal plexus appeared to be a trunk pattern and the vessels were sparse; The muscular plexus was formed by the returning branches from the subserosal plexus and the submucosal plexus, in each muscular layer the vessel density was the highest in great curvature of stomach, but the lowest in lesser curvature; the vessel density of the submucosal plexus , was the highest in thefundus and in the posterior wall of the pylorio region and lesser curvature was the lowest; The mucosal arteries arose from the vessels of the submucosal plexus and there were anastomoses between the arteries. There was difference in the density of thevessels of the mucosal plexus, the highest in fundus and the lowest in lesser curvature. No artero-venous anastomoses were seen within mucosal plexus.