绒毛微动脉在顶部与绒毛微静脉有交通支，形成毛细血管前动静脉吻合。
There were connecting vessels between the villi arteriole and the villi venule at the tip of the villi, and they form a precapillary arteriovenous anastomosis.
对8例经尸检证实为脑前交通动脉动脉瘤破裂的病理与临床资料进行了回顾性研究。
The autopsy records and clinical materials in 8 cases of ruptured aneurysms of the anterior communicating artery (ACoA) were analyzed.
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