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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Fine structure of the monkey epididymis. B cells are seen in great number with ovoid nuclei and evident nucleoli. The structure and function of the epididymis. Note the stereocilia s and myoepithelial cells arrowheads.

A light microscope and ultrastructural study.

Histologia aparato reprodutor epididimo

The third zone, or zone III, comprises the distal head and all the body. The epididymis, in all the species studied, so far is known, present variabilities in structure and function along its length. The epithelial height of zone II is somewhat lower than those of zone I It is observed zone I or initial segment and zone II, both of them localized into the head.

Development of the fertilizing ability of spermatozoa in the epididymis of the rabbit.

An immunocytochemical study reveals the expression patterns of several cytokeratins, vimentin and desmin in the epididymis of the dog WAKUI uistologia al. Coexpression of different cytokeratins, vimentin and desmin in the rete testis and epididymis in the dog. Epithelium of zone II showing p, a, and b cells, stereocilia s and stroma periductal rose. The fourth and fifth zones zones IV and Vare restricted to the tail, localized into the proximal and distal Cauda epkdidimo, respectively.


The position and shape of their nuclei are variable, along the length of the duct Figs. The epididymal lumen in zone II appears regular, and contains rather immature spermatozoa in scarce number, and also cellular remnants. The tissues were observed in a Olympus BH-2 microscope. Studies on the regional histology and cytochemistry of the ductus epididymis in stallions, rams and bulls. The mammalian epididymidis is an important segment histoogia the excurrent duct system of the testis, that performs a variety of functions.

A cells are scarce and presented the same morphology, as described later. hixtologia

However, each epididymal region shows differentiating features with respect to epithelial height, luminal diameter, thickness of muscular wall, and cytological characteristics of epithelial cells. The regional morphometric differences observed in epithelial height, luminal diameter and muscle-wall thickness, in all the histological zones, are summarized in Table I.

The structure of the epididymis, efferent ductules and ductus deferens in the guinea pig: Histology and histochemistry of corpus epididymis in indian buffaloes Bubalus bubalis at different ages of maturity. However, in this study the zone II is restricted to the head of the dog epididymidis exclusively.

The epithelium decreases in height and, concomitantly there is an increase in luminal diameter and in muscle wall thickness. Along the five regions in dog epididymidis, are found hixtologia cells and basal cells. The epithelial lining measures Zur Struktur und Bedeutung der Epithelien epididimp Ductus epididymis. Each zone can be readly distinguished on the basis of its own duct morphological characteristics.

Table I – Morphological comparisons between different zones of the epididymis in the dog Morphological features. Structure and function of the epithelium lining the ductuli efferentes; ductus epididymis and ductus deferens in the rat.


Test Histologia aparato reprodutor epididimo

Some aspects of structure and function in the mammalian epididymis. Several histological features differentiate the zone V from the other epididymal zones, in the dog. Zur Histotopik von Hydrolasen in Nebenhoden des Hundes.

The histology of the rat epididymis. Ultrastructural differences in efferent ducts and several regions of the epididymis of the hamster. The zone III comprises the distal head and all the epididymal body.

The epithelium contained the same three cell types, similar to other zones. This zone was characterized by irregular epithelium Hence, there is always an overlapping of morphological characteristics between two adjacent regions. The tall columnar P cells have round to spherical nuclei with one or two distinct nucleoli, and usually the nuclei are localized in the lower half of the cells.

#epididimo medias

The luminal occurrence epidjdimo many packets of spermatozoa is a typical feature of this zone. P cells have round nuclei, with one or two evident nucleoli; stereocilia are regular and shorter forming a brush border.

From the average values for each animal and its distinct epididymal zones, arithmetic means and s. Ten adult, mongrel, sexually mature dogs Canis familiarisL.