. Outlines of zoology. in jj R - *j 3 E SJ .-^J^ o <-• in s ? t^ li-B M - O 3 <« o c « rr ?«1 ?-.§ p. rri-rt it ?3 .S-Sfe 2 4) ffi CS REPRODUCTIVE SYSTEM. 513 Reproductive system.—The ovaries and testes aredeveloped from a ridge formed by a part of the epitheliumlining the abdominal cavity, this ridge constituting theso-called germinal epithelium. In the male the proliferating germinal epithelium isdivided by embryonic connective tissue into numerousfollicles. The cells of the follicles form seminal mother-cells, which, by their ultimate divisions, give rise to sper-matozoa. From the mes
. Outlines of zoology. in jj R - *j 3 E SJ .-^J^ o <-• in s ? t^ li-B M - O 3 <« o c « rr ?«1 ?-.§ p. rri-rt it ?3 .S-Sfe 2 4) ffi CS REPRODUCTIVE SYSTEM. 513 Reproductive system.—The ovaries and testes aredeveloped from a ridge formed by a part of the epitheliumlining the abdominal cavity, this ridge constituting theso-called germinal epithelium. In the male the proliferating germinal epithelium isdivided by embryonic connective tissue into numerousfollicles. The cells of the follicles form seminal mother-cells, which, by their ultimate divisions, give rise to sper-matozoa. From the mesonephros, tubules grow out to theembryonic testes; these form the collecting tubes of theorgans and open into the Wolfifian duct, the vas deferensof the adult. In the female the ovary is similarly divided up intofollicles. In this case, however, differentiation sets inamong the originally equivalent cells of the follicle. Onecell in each follicle is more successful than its neighbours,which are sacrificed
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Keywords: ., bookcentury1900, bookdecade1910, bookidcu3192, booksubjectzoology
