. The development of the human body : a manual of human embryology. Embryology; Embryo, Non-Mammalian. cm- <r \. * * 1 *-5SC§* ^k «m Fig. 37.—Section of Embryo and Adjacent Portion of an Ovum of i mm. am, Amniotic cavity; ce, chorionic ectoderm; cm, chorionic mesoderm; ec, embryonic ectoderm; en, endoderm; m, embryonic mesoderm; ys, yolk-sack.—(Peters.) flat disk resting on the surface of the yolk-sac, though it must be understood that the yolk-sac also to a certain extent forms part of the embryo. This embryo seems to be in an early stage of the primitive streak formation, before the devel
. The development of the human body : a manual of human embryology. Embryology; Embryo, Non-Mammalian. cm- <r \. * * 1 *-5SC§* ^k «m Fig. 37.—Section of Embryo and Adjacent Portion of an Ovum of i mm. am, Amniotic cavity; ce, chorionic ectoderm; cm, chorionic mesoderm; ec, embryonic ectoderm; en, endoderm; m, embryonic mesoderm; ys, yolk-sack.—(Peters.) flat disk resting on the surface of the yolk-sac, though it must be understood that the yolk-sac also to a certain extent forms part of the embryo. This embryo seems to be in an early stage of the primitive streak formation, before the development of the head process. On com- paring it with the stage of development represented in Fig. 38, A, it will be seen to present some important advances. The cavity (Fig. 38, B, C) into which the yolk-sac projects is unrepresented in. 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
