. The development of the chick : an introduction to embryology. Embryology; Chickens -- Embryos. Fig. 131. — Septa of the yolk-sac as seen on the lower surface of the blastoderm at the stage of 12 s. (After Hans Virchow.) m. R., Marginal ridge of entoderm overly- ing the sinus terminalis. drawn as an opaque object, and it shows the incipient folds of the yolk-sac in an arrangement that corresponds roughly, but not accurately, with that of the blood-islands, which lie in large part in the bases of the folds. The site of the vena terminalis is marked by a circular fold of the entoderm. The folds
. The development of the chick : an introduction to embryology. Embryology; Chickens -- Embryos. Fig. 131. — Septa of the yolk-sac as seen on the lower surface of the blastoderm at the stage of 12 s. (After Hans Virchow.) m. R., Marginal ridge of entoderm overly- ing the sinus terminalis. drawn as an opaque object, and it shows the incipient folds of the yolk-sac in an arrangement that corresponds roughly, but not accurately, with that of the blood-islands, which lie in large part in the bases of the folds. The site of the vena terminalis is marked by a circular fold of the entoderm. The folds of the yolk-sac thus coincide in their distribution with the vascular area and are so limited at all times, being absent in the vitelline area. There is thus a close connection between the vitelline blood-. 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 : Henry Holt
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Keywords: ., bookauthorlilliefrankrat, bookcentury1900, booksubjectembryology
