Anatomic_Structure_Is_Physical_Part_Of Endoderm Embryonic Cell Endoderm Cell Endoderm Cell Endoderm_Cell Endodermal Cell An embryonic cell of the inner layer of three germ layers that forms the yolk sac and gives rise to the epithelium of the alimentary and respiratory tracts and the parenchyma of associated glands. Cell C1183500 Endoderm Cell C33932