. Embryology. Embryology; Embryology; genealogy. 176 EMBRYOLOGY differentiate in the splanchnic mesoderm. These masses of mesoderm cells form both blood and the lining of the blood vessels. The innermost cells of the blood islands differentiate into blood cells, while an outer layer forms a sac. Many of these sacs fuse and by growth and elongation are converted into blood vessels. This process results in a complicated network of vessels in an area surrounding the embryo—the area vasculosa. Within the embryo two NEURAL TUBE NOTOCHORD SOMATIC MESODERM SPLANCHNIC MESODERM. DORSAL MESODERM ECTODER


. Embryology. Embryology; Embryology; genealogy. 176 EMBRYOLOGY differentiate in the splanchnic mesoderm. These masses of mesoderm cells form both blood and the lining of the blood vessels. The innermost cells of the blood islands differentiate into blood cells, while an outer layer forms a sac. Many of these sacs fuse and by growth and elongation are converted into blood vessels. This process results in a complicated network of vessels in an area surrounding the embryo—the area vasculosa. Within the embryo two NEURAL TUBE NOTOCHORD SOMATIC MESODERM SPLANCHNIC MESODERM. DORSAL MESODERM ECTODERM A ENDOCARDIAL VESICLES ^T FOREGUT. 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 Barth, Lester G. (Lester George), 1905-1979. New York, Dryden Press


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