Ergün S, Stingl J, Holstein A F
Anatomisches Institut, Universität Hamburg, Germany.
Andrologia. 1994 May-Jun;26(3):143-50. doi: 10.1111/j.1439-0272.1994.tb00778.x.
There is a close correlation between the angioarchitecture of the human testis and its inner subdivision into testicular lobules. Serial sections from paraffin and epon-embedded testicular tissue were used to examine the angioarchitecture of the human testis, and computer-aided 3-D-reconstruction was used to demonstrate the correlation between blood vessels and tissue organization. The recurrent arteries arise from the centripetal arteries, and run in the central axis of the testicular lobule. At regular intervals of on average, 300 microns the segmental arteries arise from the recurrent artery, which supplies segments of the testicular parenchyma perpendicular to the long axis of the testicular lobules. Within such a segment, the segmental artery supplies the microvasculature, which is partly surrounded by Leydig cells and partly stands in close contact with the wall of the seminiferous tubules. The venous drainage occurs through the intralobular veins, which run to the periphery of the lobule (towards the septum). These veins lead into the septum and there they join the collecting veins. A lobule can have several segments depending on its size. The base of such a tissue segment is directed towards the septum whereas the top is directed towards the centre of the lobule. Sections of several seminiferous tubules can be found in such a segment. The flow of blood from the arterial to the venous side of the testicular circulation occurs radially from the centre of the lobule to the septum.
人类睾丸的血管构筑与其内部细分为睾丸小叶之间存在密切关联。使用石蜡和环氧树脂包埋的睾丸组织连续切片来检查人类睾丸的血管构筑，并采用计算机辅助三维重建来展示血管与组织结构之间的相关性。折返动脉起源于向心动脉，沿睾丸小叶的中轴线走行。节段动脉平均每隔300微米从折返动脉发出，为垂直于睾丸小叶长轴的睾丸实质节段供血。在这样一个节段内，节段动脉为微脉管系统供血，微脉管系统部分被睾丸间质细胞包围，部分与曲细精管管壁紧密接触。静脉回流通过小叶内静脉进行，这些静脉向小叶周边（朝向间隔）走行。这些静脉进入间隔并在那里汇入集合静脉。一个小叶根据其大小可以有多个节段。这样一个组织节段的底部朝向间隔，而顶部朝向小叶中心。在这样一个节段内可以发现几条曲细精管的切片。睾丸循环中血液从动脉侧到静脉侧的流动是从叶中心呈放射状流向间隔。
