Короткий опис(реферат):
We studied the primordium, formation and topographoanatomical relationships with the adjacent structures of the primary nasal cavity on 37 series of microscopic sections of human embryos by means of methods of histologic investigation, preparation of graphic and plastic reconstructions. It was noted that at the end of the embryonic period of ontogenesis the formation of primary cavities of the nose, mouth, palate, nasal septum occurred, the formation of a perm anent palate and development of intraorgan hemopoiesis began. The adjacent structures of the primary nasal cavity were only at the primordial stage.
