. A text-book of embryology for students of medicine [electronic resource]. Embryology; Embryology. Fig. 57—Human embryo of about the fifteenth day (His). The embryo is attached to the wall of the blastodermic vesicle by means of the umbilical or allantoic stalk, and is enclosed within the amnion ; the large vitelline sac freely communicates with the still widely open Fig. 58.—Human embryo with yolk-sac, amnion, and belly-stalk of fifteen to eighteen days (after Coste). The chorion is detached at am': am, amnion; am', the point of attachment of the amnion to the chorion drawn out to a ti
. A text-book of embryology for students of medicine [electronic resource]. Embryology; Embryology. Fig. 57—Human embryo of about the fifteenth day (His). The embryo is attached to the wall of the blastodermic vesicle by means of the umbilical or allantoic stalk, and is enclosed within the amnion ; the large vitelline sac freely communicates with the still widely open Fig. 58.—Human embryo with yolk-sac, amnion, and belly-stalk of fifteen to eighteen days (after Coste). The chorion is detached at am': am, amnion; am', the point of attachment of the amnion to the chorion drawn out to a tip; bst, belly- stalk ; Sch, tail-end ; us, primitive segment; dg, vitelline blood-vessels; ds, yolk- sac; h, heart; vb, visceral arch. Between the fifteenth and the twenty-first day, the lens- vesicles and the otic vesicles are formed by invaginations of the surface ectoderm (Fig. 59, 7 and 8), these sacs being. 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 Heisler, John Clement; Waterstone, David, former owner; Duke-Elder, Stewart, 1898-1978, former owner; University College, London. Library Services. Philadelphia : W. B. Saunders Company
Size: 1739px × 1437px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpubli, booksubjectembryology
