. A manual of zoology. Zoology. Fig. ^v—Germinal epithelium of a medusa, ck. ectoderm; 01, entoderm; 0, egg; e, cpiUielium. their sexual products in epithelium. In other words, sexual and epithelial cells are the oldest elements of the animal Ixxly, and hence very early came into relation with one another. Sexual epithelium (or gcniiiiuil cpillu-Hiiiii) like glandular epithelium has a tendencv to grow into the subepithelial tissues in the form of. Fig. 34.—Section llirougli llio ovary of a nc\v4ioni cliil I (after W'alilcycr'). i;c, germinal cpitheliuiu; /jc, priniiuw ei;.^ in die jj;riniinal
. A manual of zoology. Zoology. Fig. ^v—Germinal epithelium of a medusa, ck. ectoderm; 01, entoderm; 0, egg; e, cpiUielium. their sexual products in epithelium. In other words, sexual and epithelial cells are the oldest elements of the animal Ixxly, and hence very early came into relation with one another. Sexual epithelium (or gcniiiiuil cpillu-Hiiiii) like glandular epithelium has a tendencv to grow into the subepithelial tissues in the form of. Fig. 34.—Section llirougli llio ovary of a nc\v4ioni cliil I (after W'alilcycr'). i;c, germinal cpitheliuiu; /jc, priniiuw ei;.^ in die jj;riniinal i'])ilhidium; />, egg-])Oueh; i,^, egg-nest constricted oft from the pouehlike gi\n\ ih {p); /', single egg with follicle; 1', blood-vessel. isolated or branching tubes (figs. 34, p, 35), and thus in many groups of animals the sexual organs resemble branched glands; hence one speaks as often of sexual glands as of sexual organs (fig. 34). The male and female cells, the specific elements of the germinal epithelia and of the. 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 Hertwig, Richard, 1850-1937; Kingsley, J. S. (John Sterling), 1854-1929, ed. and tr. New York, H. Holt
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectzoology, bookyear1912
