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  • 1
    Electronic Resource
    Electronic Resource
    Elektronenoptische Untersuchungen über Transsudationsvorgänge zwischen Blut- und Lymphkapillaren im Lymphobulbus des Kopulationsorganes beim Haushahn (Gallus domesticus) (1975)
    Oxford, UK : Blackwell Publishing Ltd
    Anatomia, histologia, embryologia 4 (1975), S. 0 
    Details
    ISSN: 1439-0264
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Electronmicroscopical studies of transudation between blood capillaries and lymph capillaries in the lymphobulbus of the phallus of the cockerel (Gallus domesticus)The blood capillaries of the lymphobulbus cloacae may be divided into circulatory and transudation capillaries and may be distinguished from one another and from the lymph capillaries by ten criteria. The specific structure of the wall of these capillaries permits transudation of lymph from the blood-vascular to the lymphatic system. The lymph passes through the pores and fenestrae of the transudation capillaries into the interstitium and from here by two routes into the lymphobulbus. One route is intracellular-vesicular, and the other is intercellular (between the endothelial cells of the lymph capillaries). The contraction of the striated M. sphincter cloacae during erection of the phallus presses the lymph through the ductus lymphaticus bulbospongiosus cloacae into the corpus cavernosum of the phallus. There is a relationship between the structure and functional stages of the lymphobulbus and age, and between the former and the levels of the steroid sex hormones.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1439-0264.1975.tb00643.x
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  • 2
    Electronic Resource
    Electronic Resource
    Die Frühentwicklung der Gonaden und die Ontogenese von Rete testis und Tubuli seminiferi recti beim Huhn (Gallus domesticus) (1976)
    Oxford, UK : Blackwell Publishing Ltd
    Anatomia, histologia, embryologia 5 (1976), S. 0 
    Details
    ISSN: 1439-0264
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The early development of the gonads, and the ontogenesis of the rete testis and tubuli seminiferi recti in the chicken (Gallus domesticus)The primordium of the gonads can be discerned in the 4-day chick embryo by the elevation of the celomic epithelium to form germinal epithelium, and by the arrival of the primordial germ cells. Already in the 4½ day chick embryo there appears on the left side of the body, as a result of the first proliferation of the germinal epithelium, a subepithelial mesenchymelike cell conglomeration, which has been erroneously labelled in the literature a “urogenital union”. In contrast to the opinion expressed in the literature such a union does not appear until the 10th day, when the mesenchymal cells change to forerunners of rete cells which after hatching differentiate into rete-epithelial cells. The rete testis consists of intra and extratesticular transverse cisterns and of an intercalated and partically subdivided longitudinal cistern. The tubuli seminiferi contori end on the intracapsular lingitudinal cisterns either directly, or indirectly by intercalated tubuli siminiferi recti or intratesticular transverse cisterns.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1439-0264.1976.tb00774.x
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  • 3
    Electronic Resource
    Electronic Resource
    Vergleichend-anatomische Untersuchungen über einen transepithelialen Flüssigkeitsstrom in das Lumen der Kloake von Vögeln (1978)
    Oxford, UK : Blackwell Publishing Ltd
    Anatomia, histologia, embryologia 7 (1978), S. 0 
    Details
    ISSN: 1439-0264
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Comparative anatomical studies on transepithelial fluid migration into the lumen of the cloaca in birdsIn the rooster the fluid migration originates principally from lymph capillaries and ends in the interstitium of the lymphfolds. In the male duck, coot and pigeon this phenomenon occurs in a corresponding zone of transudation. In these birds the fluid migration originates principally in blood capillaries, however. From the interstitium the fluid passes through intercellular spaces of the epithelium into the lumen of the cloaca where it appears as a transparent fluid. In all examined species immunocompetent cells migrate into the cloaca with the fluid. These cells produce the immunoglobulins which have been found in the transparent cloacal fluid of the rooster.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1439-0264.1978.tb00802.x
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  • 4
    Electronic Resource
    Electronic Resource
    Morphology of the epididymis of the cock (Gallus domesticus) and its effect upon the steroid sex hormone synthesis (1975)
    Springer
    Anatomy and embryology 148 (1975), S. 175-196 
    Details
    ISSN: 1432-0568
    Keywords: Gallus domesticus ; Epididymis ; Ontogenesis ; Morphology ; Distribution ; Function
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00315268
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  • 5
    Electronic Resource
    Electronic Resource
    Morphology of the epididymis of the cock (Gallus domesticus) and its effect upon the steroid sex hormone synthesis (1975)
    Springer
    Anatomy and embryology 148 (1975), S. 197-213 
    Details
    ISSN: 1432-0568
    Keywords: Steroid sex hormone synthesis ; Testis ; Noduli epididymidis of the capon
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Distinct histochemical and ultrastructural signs of a steroid hormone synthesis are found in the sexually mature cock, particularly in the ductuli efferentes proximales of the main part of the epididymis and in the blind ends of the ductuli aberrantes of the appendix epididymidis. These signs are more distinct in the appendix epididymidis of the capon since the blind ends of the ductuli aberrantes transform into steroid sex hormone producing noduli epididymidis after they sprout out intensively and branch inside or beneath the adrenal capsule. The signs of virility were lost immediately after castration. They become more distinct again due to the hormonal activity of the noduli. Due to the morphologic agreement the noduli epididymidis of the capon are homologous to the noduli epoophori of the hen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00315269
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