Yamamoto K, Wilson D R, Baumal R
Anat Rec. 1984 Oct;210(2):273-7. doi: 10.1002/ar.1092100202.
Blood supply and drainage of the outer medulla of the rat kidney were studied by scanning electron microscopy of vascular casts, using both arterial (n = 10) and venous (n = 10) injections of resin. Both outer and inner stripes of the outer medulla were supplied through different arterial capillary networks arising from efferent arterioles and arterial (descending) vasa recta. In contrast to previous studies using silicone rubber and light microscopy, a rich arterial capillary network supplying the outer stripe was demonstrated. Capillaries in the outer stripe and outer part of the inner stripe drained into venous vasa recta between vascular bundles, while capillaries in the inner part of the inner stripe drained into venous vasa recta within the bundles. The results indicate that each zone in the outer medulla is supplied through separate capillary networks. The demonstration of a rich capillary network in the outer stripe of the outer medulla suggests that the predilection of this zone for tubular necrosis with ischemic or toxic injury is not related to a sparse capillary blood supply.
通过对血管铸型进行扫描电子显微镜检查，采用动脉（n = 10）和静脉（n = 10）注射树脂的方法，研究了大鼠肾外髓质的血液供应和引流情况。外髓质的外带和内带通过源自出球小动脉和动脉（下行）直小血管的不同动脉毛细血管网供血。与先前使用硅橡胶和光学显微镜的研究不同，此次研究证实了存在一个丰富的供应外带的动脉毛细血管网。外带和内带外部的毛细血管汇入血管束之间的静脉直小血管，而内带内部的毛细血管则汇入血管束内的静脉直小血管。结果表明，外髓质的每个区域都通过独立的毛细血管网供血。外髓质外带丰富的毛细血管网的证实表明，该区域在缺血或毒性损伤时易发生肾小管坏死，这与毛细血管血液供应稀少无关。
