. Carnegie Institution of Washington publication. YOUNG TWIN HUMAN EMBRYOS WITH 17-10 PAIRED SOMITES. 21 tion of the openings except a slight one for the first. The first pouch is very large and runs laterally and dorsally out to come into contact with the ectoderm, with which it is fused in two areas for a very short distance. The cephalocaudal diameter of the pouch is much greater than the dorsoventral. and its cavity is wide and capacious, hut as yet undivided into dorsal and ventral portions. There is a very peculiar condition found here, however, for just before the lateral edge of the po
. Carnegie Institution of Washington publication. YOUNG TWIN HUMAN EMBRYOS WITH 17-10 PAIRED SOMITES. 21 tion of the openings except a slight one for the first. The first pouch is very large and runs laterally and dorsally out to come into contact with the ectoderm, with which it is fused in two areas for a very short distance. The cephalocaudal diameter of the pouch is much greater than the dorsoventral. and its cavity is wide and capacious, hut as yet undivided into dorsal and ventral portions. There is a very peculiar condition found here, however, for just before the lateral edge of the pouch is reached, a narrow villus-like ridge, filled with mesoderm, rises from the ventral wall of the pouch into the cavity, cutting off a narrow gutter in the extreme lateral part of the pouch. From the appearance of the sections this ridge is evidently not due to an infolding of the wall as the result of sectioning or 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 Carnegie Institution of Washington. Washington, Carnegie Institution of Washington
Size: 1512px × 1653px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorcarnegie, bookcentury1900, bookdecade1910, bookyear1915
