. Elements of histology. Histology. 260 Elements of Histology. [Chap. xxxn. this membrane is a reticulum with generally one big nucleolus or germinal spot. Between these medium-sized follicles and the small follicles of the cortical layer we find all inter- mediate degrees as regards size of the follicle and the ovum, and especially as regards the shape of the cells of the membrana granulosa, the intermediate sizes of follicles being lined by a gran- ulosa made up of a layer of polyhedral epi- thelial cells. 347. The deeper Graafian follicles, , those that are to be regarded as big follicl
. Elements of histology. Histology. 260 Elements of Histology. [Chap. xxxn. this membrane is a reticulum with generally one big nucleolus or germinal spot. Between these medium-sized follicles and the small follicles of the cortical layer we find all inter- mediate degrees as regards size of the follicle and the ovum, and especially as regards the shape of the cells of the membrana granulosa, the intermediate sizes of follicles being lined by a gran- ulosa made up of a layer of polyhedral epi- thelial cells. 347. The deeper Graafian follicles, , those that are to be regarded as big follicles, contain an o v u m—o c c a - sionally, two or even three ova —which is simi- lar to that of the previous fol- licles, except that it is larger, and its zona pel- lucida thicker. The ovum does not fill out the whole cavity of the follicle, since at one side, between it and the membrana granulosa, there is an albuminous fluid, the rudiment of the liquor folliculi. 348. The biggest or most advanced follicles are of great size, easily visible by the naked eye, and con- tain a large quantity of this liquor folliculi (Fig. 143). In fact, the ovum occupies only a small part of the. Fig. large Graafian v Ovary of Cat. the The follicle is limited by a capsule, the theca folliculi; the membrana granulosa is composed of several layers of epithelial cells. The ovum with its distinct hyaline zona pellucida is embedded in the epithelial cells of the discus proligerus. The cavity of the follicle is filled with fluid, the liquor Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Klein, E. (Edward), 1844-1925. Philadelphia : H. C. Lea's Son
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