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出 处:《畜牧兽医学报》2011年第10期1450-1456,共7页ACTA VETERINARIA ET ZOOTECHNICA SINICA
基 金:甘肃省教育厅科技项目(0902B-03);甘肃省自然科学研究基金(1010RJZA210)
摘 要:对13头成年高原藏羊的睾丸采用血管铸型、常规石蜡切片结合扫描电镜观察,研究在高寒低氧环境中,藏羊睾丸精索血管分布的形态学特点。结果表明藏羊精索睾丸动脉螺旋卷曲并发出分支分布到附睾,睾丸动脉表面覆盖蔓状静脉丛;回流睾丸血液的集合静脉纵向走行形成静脉网包裹在睾丸表面,汇集至睾丸门附近形成特殊的"束袋口"构筑,紧缩回笼汇集形成蔓状静脉丛;精索部动脉和静脉各自形成三级分枝,小静脉及静脉毛细血管网与动脉滋养血管小分支之间形成广泛的吻合支。藏羊精索部血管形成了特殊的高原适应性微形态结构。The Tibetan Plateau sheep is one of the ordinary domestic animal of Qinghai-Tibetan Plateau,while anatomical evidence of its special testicular microvasculature adaptability to the high altitude environment is still less.By using the methods of vascular proplasm and replica scanning electron microscopic,we studied the angioarchitecture of the Tibetan Plateau sheep spermatic cord and its functional relationship.The results were as follows: 1)The convoluted testicular artery,which was embedded in the network of the venous pampiniform plexus and gave off branches to supply the epididymis;2)The collecting veins,which run parallelly and anastomose frequently and formed a "Binding Area of Pocket",it was the initiation area of the pampiniform plexus;3)The testicular artery and pampinifotm plexus could be divided into three grades correspondingly,the vasa vasorum deriving from branches of testicular artery to supply the wall of pampiniform plexus.From the above,the specific angioarchitectural characteristics of spermatic cord in Tibetan Plateau sheep are very different with other adult mammals.
分 类 号:S852.162[农业科学—基础兽医学]
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