[Peritoneum: a new view of the problem].

The author suggests to differentiate the concepts of "location of the organs in regard to the peritoneum" and "coverage of the organs with the peritoneum". According to the author, all the organs, except the ovaries, are located extraperitoneally, but are covered with the peritoneum from one, three or all the sides.

[Information analysis of spinal ganglia].

Information parameters (entropia and redundancy) of cervical and thoracic spinal ganglia of albino rat foetuses, mature animals (cat and dog) and human subjects were analysed. Information characteristics of spinal ganglia were shown to be level-specified and to depend on their functional peculiarities. Information parameters of thoracic spinal ganglia of man and different animals are specie specified and may be used in assessment of morphological structures as information systems.

[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.