Segmental angioarchitecture of the testicular lobule in man

Summary. 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 μm 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 micro‐vasculature, 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.

[1]  Torao Yamamoto,et al.  Three-dimensional organisation of the vasculature of the rat spermatic cord and testis : a scanning electron-microscopic study of vascular corrosion casts , 1985 .

[2]  F. Suzuki.  Microvasculature of the mouse testis and excurrent duct system. , 1982, The American journal of anatomy.

[3]  H. Takayama,et al.  Microvascular architecture of rat and human testes. , 1981, Investigative urology.

[4]  S. Hatakeyama,et al.  AGE‐ASSOCIATED CHANGES IN MICROVASCULATURE OF HUMAN ADULT TESTIS , 1978, Acta pathologica japonica.

[5]  J. Stingl.  Fine structure of precapillary arterioles of skeletal muscle in the rat. , 1976, Acta anatomica.

[6]  J. Stingl.  Zur Ultrastruktur des terminalen Gefäβbettes der Skeletmuskulatur , 1971 .

[7]  M. Kormano,et al.  Microvascular organization of the adult human testis , 1971, The Anatomical record.

[8]  M. Hundeiker.  [The capillaries of the testicular parenchyma]. , 1971, Archiv fur klinische und experimentelle Dermatologie.

[9]  M. Kormano,et al.  An angiographic study of the arterial pattern of the human testis. , 1971, Anatomischer Anzeiger.

[10]  H. Ferner,et al.  Mikroskopische Anatomie des Hodens und der ableitenden Samenwege , 1969 .

[11]  A. Gisel.  Hoden (auch Hode), Testis, Nebenhoden (auch Nebenhode), Epididymis , 1969 .

[12]  M. Hundeiker,et al.  [Preventable hazards in testis biopsy]. , 1966, Der Hautarzt; Zeitschrift fur Dermatologie, Venerologie, und verwandte Gebiete.

[13]  E. Reynolds.  THE USE OF LEAD CITRATE AT HIGH pH AS AN ELECTRON-OPAQUE STAIN IN ELECTRON MICROSCOPY , 1963, The Journal of cell biology.

[14]  H. Buergi,et al.  [Histologic testicular changes in old age]. , 1959, Schweizerische medizinische Wochenschrift.

[15]  I. Muller.  [Architectonic of the canals and capillaries of rat testes]. , 1957, Zeitschrift fur Zellforschung und mikroskopische Anatomie.

[16]  J. F. Meckel.  Handbuch der menschlichen Anatomie , 2022 .