家鸽小肠绒毛微血管铸型的扫描电镜观察

Observation of the Microvasculature Casts of the Pigeon Small Intestinal Villi by SEM

用扫描电镜观察了ABS丁酮溶液灌注的家鸽小肠绒毛微血管构筑情况。家鸽小肠绒毛血管丛由输入小动脉、毛细血管网和输出小静脉组成 ;小肠绒毛血管丰富 ,并相互吻合成单层密集网 ;输入小动脉既可从肠腺周围血管丛发出 ,也可直接由粘膜下动脉丛发出 ;绒毛下部血管表现为微直血管形态 。

In order to investigate the microvasculature of avian small intestin, the microvasculature of the pigeon small intestinal villi which injected with solution of ABS in butanone was studied under scanning electron microscope. The results showed that the vascular plexus of the pigeon small intestinal villi consisted of afferent mini artery, capillary network and efferent mini vein. Pigeon intestine was rich in villi capillary. They anastomosed to a single layer of dense network with each other. The afferent miniartery derived either from the capillary network surrounding the intestinal glands or from the submucosal artery directly. The vascular plexus at the lower part of the villi had the characteristics of recti mini vessels and protal vesselas.