![]() This becomes the medullary (or neural) plate which extends from the dorsal lip of the blastopore in an anterior direction as a median band of thickened ectoderm which widens anteriorly where the brain will develop. Either the roof of the archenteron and/or the notochord induces, in the overlying ectoderm, the formation of a thickening, limited to the nervous layer. The antero-posterior axis is made obvious by the development of the neural axis. The axes of the embryo are altered by the development of the archenteron. ![]() ![]() Historic Disclaimer - information about historic embryology pages (1951) The Blakiston Company.įrog Development (1951): 1 Introduction | 2 Rana pipiens | 3 Reproductive System | 4 Fertilization | 5 Cleavage | 6 Blastulation | 7 Gastrulation | 8 Neurulation | 9 Early Embryo Changes | 10 Later Embryo or Larva | 11 Ectodermal Derivatives | 12 Endodermal Derivatives | 13 Mesodermal Derivatives | 14 Summary of Organ Appearance | 15 Glossary | 16 Bibliography | Figures Book - The Frog Its Reproduction and Development. ![]() ייִדיש | Tiếng Việt These external translations are automated and may not be accurate. Google Translate - select your language from the list shown below (this will open a new external page) ![]()
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