. The development of the chick; an introduction to embryology. Birds -- Embryology. Ki/^. o ^/r j^^. K^. Fig. 210. — Diagrams illustrating the development of the hepatic portal circulation. (After Hochstetter.) A. About the fifty-eighth hour. B. About the sixty-fifth hour; first venous ring formed around the intestine. C. About the seventy-fifth hour; the left limb of the first ve- nous ring has disappeared. D. About the eightieth hour; the second venous ring is estab- lished. E. About the one hundredth hour; the right limb of the second venous ring has disapi)eared. F. Hepatic circulation abo
. The development of the chick; an introduction to embryology. Birds -- Embryology. Ki/^. o ^/r j^^. K^. Fig. 210. — Diagrams illustrating the development of the hepatic portal circulation. (After Hochstetter.) A. About the fifty-eighth hour. B. About the sixty-fifth hour; first venous ring formed around the intestine. C. About the seventy-fifth hour; the left limb of the first ve- nous ring has disappeared. D. About the eightieth hour; the second venous ring is estab- lished. E. About the one hundredth hour; the right limb of the second venous ring has disapi)eared. F. Hepatic circulation about the one hundred and thirtieth hour, immediately before the disappearance of the intermediate portion of the meatus venosus. a. i. p., Anterior intestinal portal. D. C. Duct of Cuvier. int., Intestine. M. V., Meatus venosus. Oils., (Esophagus. Pc, Pan- creas. St., Stomach. S. v., Sinus venosus. V. c. i., Vena cava inferior. V. h., Hepatic veins. V. o. m., Omphalomesenteric vein. V. r. 1, First venous ring. v. r. 2, Second venous ring. V. u. d., Right umbilical vein. V. u. s., Left umbilical 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 Lillie, Frank Rattray, 1870-1947. New York, Holt
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