An Ultrastructural Characterization of the Ooplasm in Ovarian Follicles of the Immature Ostrich (Struthio camelus)
نویسندگان
چکیده
منابع مشابه
Ultrastructural features of the follicular wall in developing follicles of the sexually immature ostrich (Struthio camelus).
The ultrastructure of the follicular wall in primordial, previtellogenic and vitellogenic follicles of the sexually immature ostrich is described in the present study. The follicular wall consists of a zona radiata, granulosa cell layer, basal lamina and thecal layer. Cytoplasmic processes from the plasma membranes of the granulosa cell layer and the ovocyte form the zona radiata in previtellog...
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The ultrastructure of the surface epithelium and tubular glands of the uterus in the immature ostrich is described. In ostriches with inactive ovaries the uterus is lined by a non-ciliated simple columnar epithelium, with basally located heterochromatic nuclei. Scanning electron microscopy revealed that these non-ciliated cells have a dense microvillous cover. A simple columnar to pseudostratif...
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Today, with emphasis on the mechanical heart and heart transplantation from one human to another andone species to another, a knowledge of the anatomy of the bird’s heart could contribute to theseaccomplishments. Eight male adult ostriches were used to study the heart macroscopically. This studyrevealed that the ostrich heart has some different features from the other birds. In the ostrich, fib...
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ژورنال
عنوان ژورنال: Anatomia, Histologia, Embryologia: Journal of Veterinary Medicine Series C
سال: 2008
ISSN: 0340-2096,1439-0264
DOI: 10.1111/j.1439-0264.2007.00831.x