[The morphofunctional organization of the accessory olfactory organ in mammals]

The study was performed in 180 fetuses of albino rat aged 12-21 d, cat--5-120 mm parietococcygeal length and man--4-70 mm parietococcygeal length, divided into histological slices. Vomeronasal organ of mammals, human included was found to be closely connected with nasal cavity, being its derivative. Within the period of primary palate formation in animals vomeronasal organ opens up into primary choanae, being linked both with oral and nasal cavities in similar extent. In following stages of development the period of secondary palate formation vomeronasal organ displays specific features of its structure.