【摘要】 本实验用铸型扫描电镜法观察大鼠及幼儿海马内部微血管构筑。在人观察到典型的动脉及其分支;微动脉之间、微静脉之间及微动、静脉之间均有吻合;也见到静脉及其属支、毛细血管网及其吻合。另外观察到单个毛细血管分成两支且呈麻花状排列,同时见到微静脉与微动脉成1:3～4微血管单位及毛细血管前、后括约肌。大鼠与幼儿海马血管形态不尽相同,动脉在分支过程中常从较大的血管突然移行为较小血管,在较大的血管及血管分叉处平滑肌密集。更多还原

【Abstract】 The microangioarchitecture of hippocampus was studied with the replica scanning electron microscope in rats and infants. Typical arteries and their branches were observed in the dorsal and ventral hippocampus of infants. Interarterial, intervenous and arteriovenous anastomoses were seen. Veins and their branches, capillary network and its anastomoses were also observed. A capillary divided into two branches and then they were together with each other like a fried dough twist shape. A vascular unit was observed which consisted of one vein situated centrally and three to four arterioles peripherally. Imprints of precapillary sphincters and postcapillary sphincters wene seen in human hippocampus. Morphology of the hippocampus vessels in rats was not completely similar to men. The diameter of branches which originated from arterioles suddenly changed from the larger to the smaller. There were a lot of impressions of smooth muscles in larger arterioles and their furcations.更多还原