. Journal of anatomy . the round ligament and gubernaculum devek)palong the outer edge of these sinuses. The chief conclusions maj^ therefore now be summed up as follows:— The round ligament of the adult human female is e(|uivalent to thegubernaculujn in the male embrjo at the stage when the preformed in-guinal canal has been made by the latter and the testes are still abdominal,1 Vide paj^er on Descent of Testes, Pait I., fig. 8, ].. -2:^:^. 32 Dr D. Berry Hart and not to the iuWy developed g-ubernacvilinn when the testes are descend-ing. It has thus no stage of involution. The mamma, round l
. Journal of anatomy . the round ligament and gubernaculum devek)palong the outer edge of these sinuses. The chief conclusions maj^ therefore now be summed up as follows:— The round ligament of the adult human female is e(|uivalent to thegubernaculujn in the male embrjo at the stage when the preformed in-guinal canal has been made by the latter and the testes are still abdominal,1 Vide paj^er on Descent of Testes, Pait I., fig. 8, ].. -2:^:^. 32 Dr D. Berry Hart and not to the iuWy developed g-ubernacvilinn when the testes are descend-ing. It has thus no stage of involution. The mamma, round ligament, Wolffian body and its ducts, with theovary, form a connected system—an anatomical unit in the body—analogousto what I have already described in the male. It comprises mamma, ovarj^tubes, vagina, urogenital sinus, hymen, external genitals, epoophoron, upperpart of Wolffian duct and lower end of Wolffian duct. This is the female uro-genital and mammary unit—for shortness the female unit—and will. Fig. 3. — Epidermis, on anterior abd. wall, passing backand in, to form mammary pouch. (-V.) be analysed along with the male unit in its elements and significancein a subsequent paper on Mendelian Action on Differentiated Sex. II. The Descent of the Ovaries. The ovaries develop like the testes on the inner and anterior aspects ofthe Wolffian bodies (fig. 4). There is a well-marked mesovarium, better marked than the primaryrnesorchium. They lie at first in the lumbar region, but about the 5th to6th week tlieir position is lower and behind the genital cord, where themesovarium is well marked. In the adult female they lie on the posterioraspect of the broad ligament, on the lateral pelvic wall, in front of thesacroiliac joint, immediately below the iliopectineal line, and with the Physiological Descent of the Ovaries in the Human Foetus 33 ureter curving behind. Their descent is thus purely from the abdomeninto the upper strait of the pelvis. The question
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectanatomy, bookyear1867
