• June 20, 2019

La histología regional del conducto del epidídimo en el perro comprende cinco regiones histológicamente distintas y continuas. Dos de las. Test Histologia aparato reprodutor epididimoenEpididimo Cual epitelio presenta el Epididimo?. Cuales fibras que rodean?. Cual epitélio. Histology and testicular and epididimal ultraestructure in Anolis sagrei (Sauria: Polychrotidae)/Histologia y ultraestructura testicular y del epididimo de Anolis.

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The luminal diameter is The entire epididymal duct has a hidtologia histological appearance, showing a pseudostratified epithelial lining, with stereocilia, covered by a myo-connective tissue sheath. Histochemical localization of glycosidases in dog epididymis. Ultrastructural observations suggesting merocrine secretion in the initial segment of the mammalian epididymis.

The epithelium contained the same three cell types, similar to other zones.

The tall columnar P cells have round to epidieimo nuclei with one or two distinct nucleoli, and usually the nuclei are localized in the lower half of the cells. Maturation, transport and fate of spermatozoa in the epididymis.

Structure and function of the ductuli efferentes, ductus epididymidis and vas deferens in mammals. Ultrastructural differences in efferent ducts and several regions of the epididymis of the hamster. Note the anatomical regions: Initial segment zone Hiistologia.


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Development of the fertilizing ability of spermatozoa in the epididymis of the rabbit. The physiology of reproduction. The luminal occurrence of many packets of spermatozoa epjdidimo a typical feature of this zone. Two different types of columnar cells could be distinguished: On the regional histology of the ductus epididymis in the buffalo Bubalus bubalis. The duct is surrounded by a smooth muscle layer of about Some aspects of structure and function in the mammalian epididymis.

In contrast to those findings, in our histolovia study, it has been found A cells in all the histological zones of the dog epididymidis, although in the zone V distal tailthey are not so striking, owing to the lower epithelial height. Studies of the guinea pig epididymis. The B cells are characterized by presence of nuclei of different shapes. On the regional histology and cytochemistry of the epididymis in the rabbits.

Also, it should be noted that transition between the zones is gradual, not abrupt. The position and shape of their nuclei are variable, along the length of the duct Figs. Note the stereocilia s and myoepithelial cells arrowheads.

The relative number of B and A cells is less frequent than in previous histological zones, and none peculiar features in both cells were seen, comparatively to those in other zones. Hence, there is always an overlapping of morphological characteristics between two adjacent regions.


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B cells are seen in great number with ovoid nuclei and evident nucleoli. P cells have round nuclei, with one or two evident nucleoli; stereocilia are regular and shorter forming a brush border. The A cells had a slender epidifimo, and are characterized by a wide cytoplasmic apical part, a narrow body and a more apically located nucleus, comparatively to P cells morphology.

P cells were the major cell type, and possessed slightly shorter; irregular stereocilia, with ovoid and elongated nuclei located at the middle epididi,o of the cells. New York, Raven Press, The epididymis in the dog, reveals five distinct and continuous histological zones in the duct. Thus, the middle segment of the dog epididymidis, or zone III, comprises the distal head and all the body.

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A light microscope and ultrastructural study. Ultrastructure and quantitative morphology of the principal cells.

Regional histology of the epididymis of the dog. P cells are also the most common epithelial cell type found in this zone.