The evolution of man: a popular exposition of the principal points of human ontogeny and phylogene . 4i6 THE EVOLUTION OF MAN. become oviducts, traces of the Wolffian ducts remain, andare known as Gartners Figs. 324-326.—Urinary and sexual organs of an embryonic Ox. , of female embryo of 1| inch in length ; Fig. 325, of male embryoof 24 inches in length; Fig. 326, of female embryo of 2^ inches in length :w, primitive kidney; wg, Wolffs dnct; m, Miillers duct; m, upper end ofhe latter (opened at t); i, lower thickened end of the same (rudimentof utenis) ; g, genital cord ; h, te
The evolution of man: a popular exposition of the principal points of human ontogeny and phylogene . 4i6 THE EVOLUTION OF MAN. become oviducts, traces of the Wolffian ducts remain, andare known as Gartners Figs. 324-326.—Urinary and sexual organs of an embryonic Ox. , of female embryo of 1| inch in length ; Fig. 325, of male embryoof 24 inches in length; Fig. 326, of female embryo of 2^ inches in length :w, primitive kidney; wg, Wolffs dnct; m, Miillers duct; m, upper end ofhe latter (opened at t); i, lower thickened end of the same (rudimentof utenis) ; g, genital cord ; h, testes (/i, lower, h, upper testis-cord) ;0, ovary; o, lower ovary-cord; i, groin-cord of the primitive kidney;d, diaphragm-cord of the primitive kidney; n, permanent kidneys (belowthese the S-shaped urine-duct; between the two the rectum); v, urine-bladder ; a, navel-artery. (After Kolliker.) The most interestins: facts in reference to this remark-able development of the primitive kidney ducts and theirunion with the sexual glands are exhibited in Amphibia(Figs. 321-323). The first rudiment of the primitive kidneyducts and their differentiation into the Miillerian and DEVELOPMENT OF THE HUMAN KIDNEY. 417 W
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Keywords: ., bookcentury1800, booksubjectembryologyhu, booksubjecthumanbeings
