摘要
目的为盲肠微循环提供形态学基础资料。方法通过墨汁灌注组织切片、揭层透明、微血管铸型扫描电镜等方法,观察30具胎儿尸体盲肠微血管构筑并探讨其相互关系。结果盲肠浆肌层在系膜缘侧毛细血管网眼呈与盲肠长轴平行的矩形,而靠近对系膜缘侧的毛细血管网眼多为不规则的五边形;环肌层可见环行肌束间动脉多呈"叶脉状"分为二支,分支间有横行粗短的多曲状吻合支,并由吻合支发蚓状血管;黏膜下层血管较粗网眼密度低。黏膜的毛细血管围绕结肠腺构成毛细血管丛,腺周毛细血管围成椭圆形,腺口毛细血管环均呈四边形。结论胎儿盲肠各层毛细血管网眼形状和密度均有所不同,说明盲肠血供存在部位的差异。
Objective To provide morphology data about cecum capillary. Methods The cecum capillary architecture was observed through ink injecting, making histotomy and transparent specimen; microvasulature cast was observed by scanning electron microscope （SEM）. Results The form of the capillary network in the mesenterium segment of cecum serous membrance and muscular layer was rectangle, which was horizontal with the long axis of cecum, irregular pentagon in the contra-mesenterium segment. There were many twist ramus anastomoticus among the muscle bundle artery that was leaf vein shape in the circular layer. The capillary in submucosa was thickness, and the anastomoticus is small. The micrangium of mucocus formed vasculosus that encircle the colonic gland. The shape of vasculosus was ovalisation and quadrilateral at gland entrance. Conclusion The shape and density of capillary network of cecum is different, which demonstrated the blood supply of cecum is variant.
出处
《解剖学研究》
CAS
2009年第6期443-446,共4页
Anatomy Research
关键词
盲肠
微血管构筑
胎儿
Cecum
Microvascular architecture
Embry
