Pow C S, Martin L
Department of Physiology and Pharmacology, University of Queensland, Australia.
J Reprod Fertil. 1994 Jul;101(2):247-55. doi: 10.1530/jrf.0.1010247.
The ovarian-uterine vasculature was examined in three Australian species of flying fox (Pteropus scapulatus, P. poliocephalus and P. alecto). Vascular casts and histological sections were used to determine the relationship between the blood supply and the localized endometrial reaction, which occurs ipsilateral to the ovulating ovary. The ovarian artery coils extensively just cranial to the ovary, gives off a branch to the ovary and continues caudally as the major vessel supplying the cranial tip of the uterus, where it anastomoses with the smaller uterine artery. The coil of the ovarian artery is completely enclosed by a venous sinus that drains the cranial pole of the ovary. The ovary is heavily encapsulated, with primordial follicles restricted to the caudal pole; thus, the corpus luteum is completely internal and placed cranially, close to the coil of the ovarian artery. This arrangement would allow countercurrent or crosscurrent transfer of ovarian steroids from ovarian vein to ovarian artery and on to the cranial tip of the ipsilateral uterine horn. The steroids could thus reach high concentrations locally and generate localized endometrial growth. Cranial to the coil, the ovarian artery is enclosed in a venous sinus that derives from uterine as well as ovarian veins. This would allow countercurrent transfer of bioactive substances from uterus to ovary.
对三种澳大利亚狐蝠（棕腹狐蝠、灰头狐蝠和黑首狐蝠）的卵巢 - 子宫血管系统进行了检查。使用血管铸型和组织学切片来确定血液供应与局部子宫内膜反应之间的关系，这种反应发生在排卵卵巢的同侧。卵巢动脉在卵巢前方广泛盘绕，发出一支供应卵巢，并继续向尾侧延伸成为供应子宫头端的主要血管，在那里它与较小的子宫动脉吻合。卵巢动脉的盘绕部分完全被一个引流卵巢头极的静脉窦包围。卵巢被厚厚的包膜包裹，原始卵泡局限于尾极；因此，黄体完全位于内部且位于头侧，靠近卵巢动脉的盘绕处。这种排列方式将允许卵巢类固醇从卵巢静脉逆流或交叉流至卵巢动脉，再到同侧子宫角的头端。因此，类固醇可以在局部达到高浓度并促使局部子宫内膜生长。在盘绕部分前方，卵巢动脉被一个由子宫静脉和卵巢静脉形成的静脉窦包围。这将允许生物活性物质从子宫逆流至卵巢。
