. Comparative anatomy of vertebrates. Anatomy, Comparative; Vertebrates. ffv.—^. /fffefj m FII;. 342. — DIAGRAM OF THE URINOGENITAL SYSTEM OF (A) A MALE AND (B) A FEMALE UKODELE ; FOUNDED ON A PREPARATION OF Triton tuninttt* (After J. W. Spengel.) a, collecting tubes of the mesonephros, which open into the Wolffian (urino- genital) duct (Ig) ; in the female the latter serves simply as the urinary duct (Ur), and the system of the vasa efferentia (testicular network) is vestigial ; ON, anterior portion of kidney (epididymis of the male) ; Ho, testis ; mg, mg\ Miillerian duct ; N, posterior non-s
. Comparative anatomy of vertebrates. Anatomy, Comparative; Vertebrates. ffv.—^. /fffefj m FII;. 342. — DIAGRAM OF THE URINOGENITAL SYSTEM OF (A) A MALE AND (B) A FEMALE UKODELE ; FOUNDED ON A PREPARATION OF Triton tuninttt* (After J. W. Spengel.) a, collecting tubes of the mesonephros, which open into the Wolffian (urino- genital) duct (Ig) ; in the female the latter serves simply as the urinary duct (Ur), and the system of the vasa efferentia (testicular network) is vestigial ; ON, anterior portion of kidney (epididymis of the male) ; Ho, testis ; mg, mg\ Miillerian duct ; N, posterior non-sexual portion of kidney ; Of, cn-lomic aperture of Miillerian duct (oviduct, Od) ; Or, ovary ; Ve, vasa efferentia of testis which open into the longitudinal canal of the mesonephros, f. elongated. In the embryo they consist of definite masses which are arranged metamerically, and in each of them a glomerulus, a nephrostome, and an excretory duct can be distinguished ( 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 Wiedersheim, Robert, 1848-1923; Parker, W. N. (William Newton), d. 1923. London, Macmillan and co. , limited
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