. Comparative anatomy of vertebrates. Anatomy, Comparative; Vertebrates -- Anatomy. UROGENITAL SYSTEM. 349 a modification of the lining of the oviduct in this species which allows some blood to escape and this gives additional nourishment. In the amniotes the yolk sac reappears and there are in addition. FIG. 346.—Diagrams of the development of amnion and allantois. Upper figure earlier, transverse section; lower later, longitudinal, a, amnion; al, alimentary canal; am. cav, amniotic cavity; ch, beginning of chorion; 5, serosa; so, somatopleure; ys, yolk Please note that these images a


. Comparative anatomy of vertebrates. Anatomy, Comparative; Vertebrates -- Anatomy. UROGENITAL SYSTEM. 349 a modification of the lining of the oviduct in this species which allows some blood to escape and this gives additional nourishment. In the amniotes the yolk sac reappears and there are in addition. FIG. 346.—Diagrams of the development of amnion and allantois. Upper figure earlier, transverse section; lower later, longitudinal, a, amnion; al, alimentary canal; am. cav, amniotic cavity; ch, beginning of chorion; 5, serosa; so, somatopleure; ys, yolk 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 Kingsley, J. S. (John Sterling), 1854-1929. Philadelphia, P. Blakiston's son & co.


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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1912