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Morphology of the epididymis of the cock (Gallus domesticus) and its effect upon the steroid sex hormone synthesis

I. Ontogenesis, morphology and distribution of the epididymis

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Summary

The epididymis of the cock is divided into a main part and an appendix epididymidis.

The main part of the epididymis is firmly connected to the testis. The sperm transporting tubes open into the ductus epididymidis along its entire length. The rete testis, as the most proximal part of the epididymis, develops from mesenchym cells. The rete testis connects the tubuli seminiferi with the ductuli efferentes proximales which develop from the Bowman's capsules of the mesonephros. The ductuli efferentes distales develop from the proximal tubules, conducting segments (loops of Henle), and the distal tubules of the mesonephros. The short ductuli conjugentes which open into the ductus epididymidis, originate from the connecting segments of the mesonephros.

In the sexually mature cock the rete testis, the ductuli efferentes proximales, and the ductus epididymidis all show an enlargement in the lumen. In the ductuli efferentes proximales and in the ductus epididymidis one can observe a formation of globuli and cell protrusion which lead to a loss of the surface structure of the epithelial cells.

The appendix epididymidis and the capsula fibrosa of the adrenal gland are joined by connective tissue. The appendix epididymidis consists of the blindly ending ductus aberrans (the cranial continuation of the ductus epididymidis) and the ductuli aberrantes which open into the ductus aberrans. The blind ends of the ductuli aberrantes end in the capsula fibrosa of the adrenal gland.

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Authors and Affiliations

  1. Department of Veterinary Anatomy, Histology and Embryology of the Freien Universität Berlin, Berlin, Germany

    K. -D. Budras & T. Sauer

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  1. K. -D. Budras
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  2. T. Sauer
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Budras, K.D., Sauer, T. Morphology of the epididymis of the cock (Gallus domesticus) and its effect upon the steroid sex hormone synthesis. Anat. Embryol. 148, 175–196 (1975). https://doi.org/10.1007/BF00315268

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  • DOI: https://doi.org/10.1007/BF00315268

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