. The development of the human body : a manual of human embryology. Embryology; Embryo, Non-Mammalian. Fig. 161.—A, The Venous Trunks of an Embryo of 5 mm. seen from the Ventral Surface; B, Diagram Illustrating the Transformation to the Adult Condition. Vcd and Vcs, Right and left superior venae cavae; Vj, jugular vein; , vitelline vein; Vp, vena porta; Vu, umbilical vein (lower part); Vu', umbilical vein (upper part); Vud and Vus, right and left umbilical veins (lower parts).—(His.) between the middle cross-connection and the ductus venosus, and so there is formed from the vitelline veins
. The development of the human body : a manual of human embryology. Embryology; Embryo, Non-Mammalian. Fig. 161.—A, The Venous Trunks of an Embryo of 5 mm. seen from the Ventral Surface; B, Diagram Illustrating the Transformation to the Adult Condition. Vcd and Vcs, Right and left superior venae cavae; Vj, jugular vein; , vitelline vein; Vp, vena porta; Vu, umbilical vein (lower part); Vu', umbilical vein (upper part); Vud and Vus, right and left umbilical veins (lower parts).—(His.) between the middle cross-connection and the ductus venosus, and so there is formed from the vitelline veins the vena porta. While these changes have been progressing the right umbilical vein, originally the larger of the two (Fig. 160, A and B, ), has become very much reduced in size and, losing its connection with the left vein at the umbilicus, forms a vein of the ventral abdom- inal wall in which the blood now flows from above downward. The. 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 McMurrich, J. Playfair (James Playfair), 1859-1939. Philadelphia : P. Blakiston's son & co.
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Keywords: ., bookautho, bookcentury1900, bookdecade1910, booksubjectembryology
