. Practical anatomy of the rabbit : an elementary laboratory textbook in mammalian anatomy . Rabbits; Anatomy, Comparative. 92 Anatomy of the Rabbit. with the lymphatic trunks form extensive plexuses, in connection with which the lymph nodes are distributed. THE URIWOGENITAL SYSTEM. The urinogenital system comprises two primary systems— reproductive and virinary—differing widely in their central organs, but associated to a certain extent by having common ducts. In the rabbit, as indicated in the accompanying diagram (Fig. 48), this association extends only to the presence in the two sexes of a
. Practical anatomy of the rabbit : an elementary laboratory textbook in mammalian anatomy . Rabbits; Anatomy, Comparative. 92 Anatomy of the Rabbit. with the lymphatic trunks form extensive plexuses, in connection with which the lymph nodes are distributed. THE URIWOGENITAL SYSTEM. The urinogenital system comprises two primary systems— reproductive and virinary—differing widely in their central organs, but associated to a certain extent by having common ducts. In the rabbit, as indicated in the accompanying diagram (Fig. 48), this association extends only to the presence in the two sexes of a urinogenital canal, or urinogenital sinus connecting both urinary and genital structures with the outside of the body. This canal is designated in the rriale as the urethra, but in the female as the. Fig. 49. The principal stages in specialization of the female urinogenital ducts in vertebrates. A, frog; B, monotreme; C, marsupial, bl, bladder; cl, cloaca; Ic, Icidney; od, oviduct; ov, ovary; r, rectum* u, ureter; us, urinogen- ital sinus (vestibulum); ut, uterine tube; v, vagina. .Chiefiy from figures of Gegenbaur and Wiedersheim. vestibulum, since the structure known from the human relation as the female urethra is only a urinary canal leading from the bladder, and in man is not associated with the reproductive ducts. In primitive vertebrates (Fig. 49), the urinary and genital ducts open into the posterior end of the digestive tube, the latter forming in this relation a common canal, the cloaca. In terrestrial vertebrates, the urinary bladder is developed as a ventral outgrowth of the digestive tube, and, except in amphibians, both sets of ducts undergo a migration from their original position on to the wall of its canal, the latter being thus trasfnormed into a URINOGENITAL DUCTS IN 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 ma
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectanatomy, bookyear1921
