EPIDIDIMO HISTOLOGIA PDF

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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#epididimo medias

A morphologic study of the ductus of the epididymis of Sus domesticus. The duct is surrounded by a smooth muscle layer of about Regional distribution of steroids in the dog epididymis.

The A cells had a slender shape, and are characterized by a wide cytoplasmic apical part, a narrow body and a more apically located nucleus, comparatively to P cells morphology. An immunocytochemical study reveals the expression patterns of several cytokeratins, vimentin and desmin in the epididymis of the dog WAKUI et al.

The few B cells found, contained an elongated nucleus parallel to the basal lamina. The histology of the rat epididymis.

The position and shape of their nuclei are variable, along the length of the duct Figs. Ultrastructure and quantitative morphology of the principal cells. The muscle coat is thicker Studies on the regional histology and cytochemistry of the ductus epididymis in stallions, rams and bulls. Epithelium of zone IV showing p and b cells. The tissues were observed in a Olympus BH-2 microscope.

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. The zone V comprises the distal tail, and is characterized by lower epithelial lining, greater luminal diameter, shorter stereocilia, packed spermatozoa inside the tubular lumen, and a thicker smooth muscle wall, comparatively to the other histological zones in the dog epididymidis.

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The epithelium contained all the cell types noticed. A cells in zone II are similar, in appearance, to those found in the initial segment. Coexpression of different cytokeratins, vimentin and desmin epididdimo the rete testis and epididymis in the dog. New York, Raven Epididimp, The structure of the epididymis, efferent ductules and ductus deferens in the guinea pig: Ten adult, mongrel, sexually mature dogs Canis familiarisL.

The epithelium contained the same three cell types, similar to other zones. Several histological features differentiate the zone V from the other epididymal zones, in the dog.

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Morphology of the bovine epididymis. The stereocilia still are histologiaa and shorter, forming a brush border. HAMILTON reported that epididymis is a dynamic structure of the seminal pathway, and its complex morphophysiology does not agree with the concept that epididymis would have merely a passive influence on sperm physiology.

Previously, ORSI et al. Each zone can be readly distinguished on the basis of its own duct morphological characteristics. These cells are arranged in a distinct layer, epidiidmo immediately over the basal lamina. Hence, there is always an overlapping of morphological characteristics between two adjacent regions.

Along the five regions in dog epididymidis, are found columnar cells and basal cells. Regional histology of the epididymis of the dog.

The epithelial height of zone II is somewhat lower than those of zone I Stellate lumen stars of the ductal sections in the zone III. Table I – Morphological comparisons between different histoloia of the epididymis in the dog Morphological features. Note the anatomical regions: Casilla D Temuco mdelsol ufro. P cells are also the most common epithelial cell type found in this zone. The epididymis in the dog, reveals five distinct and continuous histological zones in the duct.

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The fourth and fifth zones zones IV and Vare restricted to the epididymal tail, localized into the proximal and distal Cauda epididymidis, respectively. Epithelium of zone II showing p, a, and b cells, stereocilia s and stroma periductal rose. Fully exposed epididymis of the dog. The A cells are fewer in number than the other cell types, and can be distinguished from P cells by their slender globlet shape, and apically located nuclei.

P cells have round nuclei, with one or two evident nucleoli; stereocilia are regular and shorter forming epididumo brush border. The structure and function of the epididymis. It is observed zone I and zone II, both of them localized into the head. The basal B cells lie next to the basal lamina, and do not reach the tubular lumen.

The samples, collected from the anatomical regions of the epididymides, were fixed in Bouin’s fluid, dehydrated and embedded in paraffin. Based upon morphological features such as: From the average values for each animal and its distinct epididymal zones, arithmetic means and s. The B cells are characterized by presence of nuclei of different shapes. The epididymis of the dog, based on morphological differences, reveals five distinct and continuous zone in the duct. Development of the fertilizing ability of spermatozoa in the epididymis of the rabbit.

The rounded tubules, obtained from several sections of different epididymal regions, were measured for height of epithelium, diameter of lumen and thickness of muscle coat.

Thus, the middle segment of the dog epididymidis, or zone III, comprises the distal head and all the body.