. Biology of the vertebrates : a comparative study of man and his animal allies. Vertebrates; Vertebrates -- Anatomy; Anatomy, Comparative. i^p>-®^ &*â .- â Central Cells of Blood Island â Peripheral Cell of Blood Island Ectoderm Splanchnic #w*j Mesoderm "^1^£. ^j^ggf*! Blood Cellsâ'4 ' ^*5r»s-^ -Mesoderm ^fe w;^c°elom "-Endothelial Cell Endoderm Cell --^^-^^^^^^^-^ Lu men Yolk B Fig. 286. Drawings of cross sections through the extraembryonic vas- cular area of a chick embryo, to show the organization of blood islands. (From Patten, Early Embryology of the Chick, copyright
. Biology of the vertebrates : a comparative study of man and his animal allies. Vertebrates; Vertebrates -- Anatomy; Anatomy, Comparative. i^p>-®^ &*â .- â Central Cells of Blood Island â Peripheral Cell of Blood Island Ectoderm Splanchnic #w*j Mesoderm "^1^£. ^j^ggf*! Blood Cellsâ'4 ' ^*5r»s-^ -Mesoderm ^fe w;^c°elom "-Endothelial Cell Endoderm Cell --^^-^^^^^^^-^ Lu men Yolk B Fig. 286. Drawings of cross sections through the extraembryonic vas- cular area of a chick embryo, to show the organization of blood islands. (From Patten, Early Embryology of the Chick, copyright 1929, by per- mission of P. Blakiston's Son and Company, publishers.) Carotid Artery Left Dorsal Aorta. Vitelline Vein Vitelline Artery Fig. 287. Early circulation of vertebrate embryos. A, appearance of vitelline circulation; b, later stage, during formation of aortic arches. (From Wilder, History of the Human Body, copyright 1923, by permis- sion of Henry Holt and Company, publishers.). 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 Walter, Herbert Eugene, b. 1867; Sayles, Leonard Perkins, 1902-. New York : Macmillan Co.
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Keywords: ., bookcentury1900, booksubjectanatomycomparative, booksubjectverte
