家兔输卵管微血管铸型的扫描电镜观察

Observation of the Microvascular Casts of Rabbit Oviduct under SEM

用扫描电镜观察了ＡＢＳ丁酮溶液灌注的家兔输卵管的微血管构筑，结果显示输卵管的血液来自生殖动脉的３ ～５ 支输卵管支．输卵管支进入管壁后，即在管壁内分支形成３ 个血管层：浆膜层血管呈网络状，肌层血管丛呈平行树枝状，粘膜血管层呈致密的网状，后者在伞部的密度明显高于近子宫端处．管壁内静脉较少弯曲，与动脉的伴行关系不如系膜内明显．微动脉铸型表面有环形纹理及内皮细胞核压迹，微静脉铸型表面则较光滑，无环形纹理，但有内皮细胞核压迹．

The microvascular architecture of adult female rabbit oviduct injected with the solution of ABS in butanone was studied under scanning electron microscope. The results showed that the blood supply of the oviduct came from 3～5 tubal branches of ovarian artery. The tubal branches entered the wall of oviduct and divided into three layers:the subserosal vascular plexus which appeared tortuous and formed reticulate anastomosis, a para llel branching vasculature in the muscle coat, and the subepithelial capillary network. Sub epithelial capillary density in the fimbriae was markedly higher than that in the isthmus and uterine part. Intrinsic venules of oviduct were less tortuous and less closely accompanied with arterioles. In mesoviduct, veins were closely accompanied with the corresponding arteries. There are obvious imprints of smooth muscles and endothelial nuclei on the surface of the casts of arteriole. There are no imprints of smooth muscles on the surface of the casts of veins, but there are imprints of endothelial nuclei.